76639056 has 40 divisors (see below), whose sum is σ = 213215520. Its totient is φ = 23581056.

The previous prime is 76639051. The next prime is 76639081. The reversal of 76639056 is 65093667.

It is a super-2 number, since 2×76639056² = 11747089809142272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76638999 and 76639017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76639051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60786 + ... + 62033.

It is an arithmetic number, because the mean of its divisors is an integer number (5330388).

Almost surely, 2^76639056 is an apocalyptic number.

It is an amenable number.

76639056 is an abundant number, since it is smaller than the sum of its proper divisors (136576464).

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

76639056 is a wasteful number, since it uses less digits than its factorization.

76639056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122843 (or 122837 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 76639056 is about 8754.3735355535. The cubic root of 76639056 is about 424.7662955019.

The spelling of 76639056 in words is "seventy-six million, six hundred thirty-nine thousand, fifty-six".