2656565631 has 12 divisors (see below), whose sum is σ = 3918905952. Its totient is φ = 1733361696.

The previous prime is 2656565609. The next prime is 2656565633. The reversal of 2656565631 is 1365656562.

2656565631 is a `hidden beast` number, since 2 + 6 + 5 + 6 + 5 + 6 + 5 + 631 = 666.

It is not a de Polignac number, because 2656565631 - 2¹¹ = 2656563583 is a prime.

It is a super-2 number, since 2×2656565631² = 14114681903620856322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656565633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3139726 + ... + 3140571.

It is an arithmetic number, because the mean of its divisors is an integer number (326575496).

Almost surely, 2^2656565631 is an apocalyptic number.

2656565631 is a deficient number, since it is larger than the sum of its proper divisors (1262340321).

2656565631 is a wasteful number, since it uses less digits than its factorization.

2656565631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280350 (or 6280347 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 2656565631 is about 51541.8822997376. The cubic root of 2656565631 is about 1384.9694165376.

The spelling of 2656565631 in words is "two billion, six hundred fifty-six million, five hundred sixty-five thousand, six hundred thirty-one".