76406556 has 12 divisors (see below), whose sum is σ = 178281992. Its totient is φ = 25468848.

The previous prime is 76406531. The next prime is 76406567. The reversal of 76406556 is 65560467.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×76406556² = 11675923599562272, 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 3 ways as a sum of consecutive naturals, for example, 3183595 + ... + 3183618.

Almost surely, 2^76406556 is an apocalyptic number.

It is an amenable number.

76406556 is an abundant number, since it is smaller than the sum of its proper divisors (101875436).

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

76406556 is a wasteful number, since it uses less digits than its factorization.

76406556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367220 (or 6367218 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 76406556 is about 8741.0843720902. The cubic root of 76406556 is about 424.3363223911.

It can be divided in two parts, 7640 and 6556, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 76406556 in words is "seventy-six million, four hundred six thousand, five hundred fifty-six".