77613132 has 24 divisors (see below), whose sum is σ = 188971776. Its totient is φ = 24746128.

The previous prime is 77613131. The next prime is 77613139. The reversal of 77613132 is 23131677.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 77613132.

It is not an unprimeable number, because it can be changed into a prime (77613131) 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, 140328 + ... + 140879.

It is an arithmetic number, because the mean of its divisors is an integer number (7873824).

Almost surely, 2^77613132 is an apocalyptic number.

It is an amenable number.

77613132 is an abundant number, since it is smaller than the sum of its proper divisors (111358644).

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

77613132 is a wasteful number, since it uses less digits than its factorization.

77613132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281237 (or 281235 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 77613132 is about 8809.8315534407. The cubic root of 77613132 is about 426.5583060866.

The spelling of 77613132 in words is "seventy-seven million, six hundred thirteen thousand, one hundred thirty-two".