77132660 has 36 divisors (see below), whose sum is σ = 178048164. Its totient is φ = 28047360.

The previous prime is 77132659. The next prime is 77132707. The reversal of 77132660 is 6623177.

77132660 = T₃₀₅ + T₃₀₆ + ... + T₇₈₈.

It can be written as a sum of positive squares in 2 ways, for example, as 22165264 + 54967396 = 4708^2 + 7414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13517 + ... + 18356.

Almost surely, 2^77132660 is an apocalyptic number.

It is an amenable number.

77132660 is an abundant number, since it is smaller than the sum of its proper divisors (100915504).

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

77132660 is a wasteful number, since it uses less digits than its factorization.

77132660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31904 (or 31891 counting only the distinct ones).

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

The square root of 77132660 is about 8782.5201394588. The cubic root of 77132660 is about 425.6762659061.

The spelling of 77132660 in words is "seventy-seven million, one hundred thirty-two thousand, six hundred sixty".