77756164 has 12 divisors (see below), whose sum is σ = 144077724. Its totient is φ = 36591104.

The previous prime is 77756149. The next prime is 77756167. The reversal of 77756164 is 46165777.

It can be written as a sum of positive squares in 2 ways, for example, as 44116164 + 33640000 = 6642^2 + 5800^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77756164.

It is not an unprimeable number, because it can be changed into a prime (77756167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571669 + ... + 571804.

It is an arithmetic number, because the mean of its divisors is an integer number (12006477).

Almost surely, 2^77756164 is an apocalyptic number.

It is an amenable number.

77756164 is a deficient number, since it is larger than the sum of its proper divisors (66321560).

77756164 is a wasteful number, since it uses less digits than its factorization.

77756164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143494 (or 1143492 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 77756164 is about 8817.9455657199. The cubic root of 77756164 is about 426.8201777800.

The spelling of 77756164 in words is "seventy-seven million, seven hundred fifty-six thousand, one hundred sixty-four".