2590656 has 56 divisors (see below), whose sum is σ = 6973824. Its totient is φ = 848640.

The previous prime is 2590649. The next prime is 2590691. The reversal of 2590656 is 6560952.

It is a super-2 number, since 2×2590656² = 13422997020672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19711 + ... + 19841.

2^2590656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2590656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3486912).

2590656 is an abundant number, since it is smaller than the sum of its proper divisors (4383168).

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

2590656 is a wasteful number, since it uses less digits than its factorization.

2590656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 2590656 is about 1609.5514903227. The cubic root of 2590656 is about 137.3419627803.

The spelling of 2590656 in words is "two million, five hundred ninety thousand, six hundred fifty-six".