76644164 has 6 divisors (see below), whose sum is σ = 134127294. Its totient is φ = 38322080.

The previous prime is 76644137. The next prime is 76644167. The reversal of 76644164 is 46144667.

It can be written as a sum of positive squares in only one way, i.e., 74684164 + 1960000 = 8642^2 + 1400^2 .

It is not an unprimeable number, because it can be changed into a prime (76644167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9580517 + ... + 9580524.

It is an arithmetic number, because the mean of its divisors is an integer number (22354549).

Almost surely, 2^76644164 is an apocalyptic number.

It is an amenable number.

76644164 is a deficient number, since it is larger than the sum of its proper divisors (57483130).

76644164 is a wasteful number, since it uses less digits than its factorization.

76644164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19161045 (or 19161043 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 76644164 is about 8754.6652705857. The cubic root of 76644164 is about 424.7757321962.

The spelling of 76644164 in words is "seventy-six million, six hundred forty-four thousand, one hundred sixty-four".