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6989261 = 172914177
BaseRepresentation
bin11010101010010111001101
3111011002110112
4122222113031
53242124021
6405445405
7113256566
oct32522715
914132415
106989261
113a44154
122410865
1315a9376
14cdd16d
15930d5b
hex6aa5cd

6989261 has 8 divisors (see below), whose sum is σ = 7656120. Its totient is φ = 6350848.

The previous prime is 6989249. The next prime is 6989267. The reversal of 6989261 is 1629896.

It can be written as a sum of positive squares in 4 ways, for example, as 4368100 + 2621161 = 2090^2 + 1619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6989261 - 214 = 6972877 is a prime.

It is a super-2 number, since 2×69892612 = 97699538652242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6596 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (957015).

Almost surely, 26989261 is an apocalyptic number.

It is an amenable number.

6989261 is a deficient number, since it is larger than the sum of its proper divisors (666859).

6989261 is a wasteful number, since it uses less digits than its factorization.

6989261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223.

The product of its digits is 46656, while the sum is 41.

The square root of 6989261 is about 2643.7210518510. The cubic root of 6989261 is about 191.1952445524.

The spelling of 6989261 in words is "six million, nine hundred eighty-nine thousand, two hundred sixty-one".

Divisors: 1 17 29 493 14177 241009 411133 6989261