76555664 has 40 divisors (see below), whose sum is σ = 154153080. Its totient is φ = 36799488.

The previous prime is 76555657. The next prime is 76555667. The reversal of 76555664 is 46655567.

It can be written as a sum of positive squares in 4 ways, for example, as 36966400 + 39589264 = 6080^2 + 6292^2 .

It is not an unprimeable number, because it can be changed into a prime (76555667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51962 + ... + 53414.

It is an arithmetic number, because the mean of its divisors is an integer number (3853827).

Almost surely, 2^76555664 is an apocalyptic number.

76555664 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

76555664 is an abundant number, since it is smaller than the sum of its proper divisors (77597416).

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

76555664 is a wasteful number, since it uses less digits than its factorization.

76555664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1581 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The square root of 76555664 is about 8749.6093627087. The cubic root of 76555664 is about 424.6121749255.

The spelling of 76555664 in words is "seventy-six million, five hundred fifty-five thousand, six hundred sixty-four".