77660332 has 36 divisors (see below), whose sum is σ = 142634520. Its totient is φ = 36991680.

The previous prime is 77660329. The next prime is 77660339. The reversal of 77660332 is 23306677.

It is a happy number.

It is a super-2 number, since 2×77660332² = 12062254332700448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77660339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342003 + ... + 342229.

It is an arithmetic number, because the mean of its divisors is an integer number (3962070).

Almost surely, 2^77660332 is an apocalyptic number.

It is an amenable number.

77660332 is a deficient number, since it is larger than the sum of its proper divisors (64974188).

77660332 is a wasteful number, since it uses less digits than its factorization.

77660332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 34.

The square root of 77660332 is about 8812.5099716256. The cubic root of 77660332 is about 426.6447582609.

The spelling of 77660332 in words is "seventy-seven million, six hundred sixty thousand, three hundred thirty-two".