76664256 has 56 divisors (see below), whose sum is σ = 203850240. Its totient is φ = 25427712.

The previous prime is 76664233. The next prime is 76664257. The reversal of 76664256 is 65246667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76664257) 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, 42705 + ... + 44463.

Almost surely, 2^76664256 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 76664256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101925120).

76664256 is an abundant number, since it is smaller than the sum of its proper divisors (127185984).

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

76664256 is a wasteful number, since it uses less digits than its factorization.

76664256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1991 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 76664256 is about 8755.8126978596. The cubic root of 76664256 is about 424.8128467783.

The spelling of 76664256 in words is "seventy-six million, six hundred sixty-four thousand, two hundred fifty-six".