2608656 has 20 divisors (see below), whose sum is σ = 6739152. Its totient is φ = 869536.

The previous prime is 2608649. The next prime is 2608663. The reversal of 2608656 is 6568062.

It is an interprime number because it is at equal distance from previous prime (2608649) and next prime (2608663).

It is a super-2 number, since 2×2608656² = 13610172252672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27126 + ... + 27221.

2^2608656 is an apocalyptic number.

2608656 is the 1022-nd centered pentagonal number.

It is an amenable number.

2608656 is an abundant number, since it is smaller than the sum of its proper divisors (4130496).

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

2608656 is a wasteful number, since it uses less digits than its factorization.

2608656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54358 (or 54352 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2608656 is about 1615.1334310205. The cubic root of 2608656 is about 137.6593150620.

The spelling of 2608656 in words is "two million, six hundred eight thousand, six hundred fifty-six".