77491164 has 24 divisors (see below), whose sum is σ = 180956160. Its totient is φ = 25809904.

The previous prime is 77491159. The next prime is 77491171. The reversal of 77491164 is 46119477.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25477 + ... + 28355.

It is an arithmetic number, because the mean of its divisors is an integer number (7539840).

Almost surely, 2^77491164 is an apocalyptic number.

It is an amenable number.

77491164 is an abundant number, since it is smaller than the sum of its proper divisors (103464996).

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

77491164 is a wasteful number, since it uses less digits than its factorization.

77491164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5127 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 77491164 is about 8802.9065654476. The cubic root of 77491164 is about 426.3347453784.

The spelling of 77491164 in words is "seventy-seven million, four hundred ninety-one thousand, one hundred sixty-four".