2656816 has 20 divisors (see below), whose sum is σ = 5258592. Its totient is φ = 1299776.

The previous prime is 2656813. The next prime is 2656831. The reversal of 2656816 is 6186562.

It is not an unprimeable number, because it can be changed into a prime (2656813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015 + ... + 2518.

2^2656816 is an apocalyptic number.

It is an amenable number.

2656816 is a deficient number, since it is larger than the sum of its proper divisors (2601776).

2656816 is a wasteful number, since it uses less digits than its factorization.

2656816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588 (or 3582 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 2656816 is about 1629.9742329252. The cubic root of 2656816 is about 138.5012924154.

The spelling of 2656816 in words is "two million, six hundred fifty-six thousand, eight hundred sixteen".