77600660 has 12 divisors (see below), whose sum is σ = 162961428. Its totient is φ = 31040256.

The previous prime is 77600641. The next prime is 77600687. The reversal of 77600660 is 6600677.

It can be written as a sum of positive squares in 2 ways, for example, as 18679684 + 58920976 = 4322^2 + 7676^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1939997 + ... + 1940036.

It is an arithmetic number, because the mean of its divisors is an integer number (13580119).

Almost surely, 2^77600660 is an apocalyptic number.

It is an amenable number.

77600660 is an abundant number, since it is smaller than the sum of its proper divisors (85360768).

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

77600660 is a wasteful number, since it uses less digits than its factorization.

77600660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880042 (or 3880040 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 77600660 is about 8809.1236794587. The cubic root of 77600660 is about 426.5354563443.

The spelling of 77600660 in words is "seventy-seven million, six hundred thousand, six hundred sixty".