2689656 has 16 divisors (see below), whose sum is σ = 6724200. Its totient is φ = 896544.

The previous prime is 2689651. The next prime is 2689657. The reversal of 2689656 is 6569862.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56011 + ... + 56058.

2^2689656 is an apocalyptic number.

It is an amenable number.

2689656 is an abundant number, since it is smaller than the sum of its proper divisors (4034544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2689656 is a wasteful number, since it uses less digits than its factorization.

2689656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112078 (or 112074 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 2689656 is about 1640.0170730819. The cubic root of 2689656 is about 139.0696130099.

The spelling of 2689656 in words is "two million, six hundred eighty-nine thousand, six hundred fifty-six".