76817604 has 12 divisors (see below), whose sum is σ = 179241104. Its totient is φ = 25605864.

The previous prime is 76817603. The next prime is 76817621. The reversal of 76817604 is 40671867.

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

It is not an unprimeable number, because it can be changed into a prime (76817603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200722 + ... + 3200745.

Almost surely, 2^76817604 is an apocalyptic number.

It is an amenable number.

76817604 is an abundant number, since it is smaller than the sum of its proper divisors (102423500).

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

76817604 is a wasteful number, since it uses less digits than its factorization.

76817604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401474 (or 6401472 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 76817604 is about 8764.5652487730. The cubic root of 76817604 is about 425.0959026944.

It can be divided in two parts, 76817 and 604, that added together give a triangular number (77421 = T₃₉₃).

The spelling of 76817604 in words is "seventy-six million, eight hundred seventeen thousand, six hundred four".