2656631404 has 24 divisors (see below), whose sum is σ = 5328334368. Its totient is φ = 1135326720.

The previous prime is 2656631389. The next prime is 2656631437. The reversal of 2656631404 is 4041366562.

It is a super-2 number, since 2×2656631404² = 14115380833438022432, which contains 22 as substring.

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, 124507 + ... + 144274.

It is an arithmetic number, because the mean of its divisors is an integer number (222013932).

Almost surely, 2^2656631404 is an apocalyptic number.

It is an amenable number.

2656631404 is an abundant number, since it is smaller than the sum of its proper divisors (2671702964).

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

2656631404 is a wasteful number, since it uses less digits than its factorization.

2656631404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269145 (or 269143 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 2656631404 is about 51542.5203497074. The cubic root of 2656631404 is about 1384.9808464380.

Adding to 2656631404 its reverse (4041366562), we get a palindrome (6697997966).

It can be divided in two parts, 26566 and 31404, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 2656631404 in words is "two billion, six hundred fifty-six million, six hundred thirty-one thousand, four hundred four".