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68376361 = 82692
BaseRepresentation
bin1000001001101…
…01011100101001
311202122212201211
410010311130221
5120001020421
610441313121
71460121664
oct404653451
9152585654
1068376361
1135662199
121aa957a1
13112207b1
14911c6db
1560099e1
hex4135729

68376361 has 3 divisors (see below), whose sum is σ = 68384631. Its totient is φ = 68368092.

The previous prime is 68376349. The next prime is 68376379. The reversal of 68376361 is 16367386.

The square root of 68376361 is 8269.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 5475600 = 7931^2 + 2340^2 .

It is not a de Polignac number, because 68376361 - 225 = 34821929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68376331) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4135 + ... + 12403.

It is an arithmetic number, because the mean of its divisors is an integer number (22794877).

Almost surely, 268376361 is an apocalyptic number.

68376361 is the 8269-th square number.

68376361 is the 4135-th centered octagonal number.

It is an amenable number.

68376361 is a deficient number, since it is larger than the sum of its proper divisors (8270).

68376361 is an frugal number, since it uses more digits than its factorization.

68376361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16538 (or 8269 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The cubic root of 68376361 is about 408.9171525334.

The spelling of 68376361 in words is "sixty-eight million, three hundred seventy-six thousand, three hundred sixty-one".

Divisors: 1 8269 68376361