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6676360681 = 10128092
BaseRepresentation
bin1100011011111000…
…10010110111101001
3122020021202021002211
412031330102313221
5102133122020211
63022253325121
7324306062254
oct61574226751
918207667084
106676360681
1129166a4661
121363a967a1
1382524c3a3
1447499209b
152911dae21
hex18df12de9

6676360681 has 9 divisors (see below), whose sum is σ = 6751463173. Its totient is φ = 6602087200.

The previous prime is 6676360637. The next prime is 6676360741. The reversal of 6676360681 is 1860636766.

The square root of 6676360681 is 81709.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4835950681 + 1840410000 = 69541^2 + 42900^2 .

It is not a de Polignac number, because 6676360681 - 215 = 6676327913 is a prime.

It is a super-2 number, since 2×66763606812 = 89147583885605567522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6676360081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8252205 + ... + 8253013.

Almost surely, 26676360681 is an apocalyptic number.

6676360681 is the 81709-th square number.

6676360681 is the 40855-th centered octagonal number.

It is an amenable number.

6676360681 is a deficient number, since it is larger than the sum of its proper divisors (75102492).

6676360681 is an frugal number, since it uses more digits than its factorization.

6676360681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The cubic root of 6676360681 is about 1882.9838576299.

Multiplying 6676360681 by its sum of digits (49), we get a square (327141673369 = 5719632).

The spelling of 6676360681 in words is "six billion, six hundred seventy-six million, three hundred sixty thousand, six hundred eighty-one".

Divisors: 1 101 809 10201 81709 654481 8252609 66102581 6676360681