77164631 has 2 divisors, whose sum is σ = 77164632. Its totient is φ = 77164630.

The previous prime is 77164627. The next prime is 77164693. The reversal of 77164631 is 13646177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77164631 - 2² = 77164627 is a prime.

It is a super-2 number, since 2×77164631² = 11908760554732322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77164591 and 77164600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77164531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38582315 + 38582316.

It is an arithmetic number, because the mean of its divisors is an integer number (38582316).

Almost surely, 2^77164631 is an apocalyptic number.

77164631 is a deficient number, since it is larger than the sum of its proper divisors (1).

77164631 is an equidigital number, since it uses as much as digits as its factorization.

77164631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 77164631 is about 8784.3401004287. The cubic root of 77164631 is about 425.7350711558.

The spelling of 77164631 in words is "seventy-seven million, one hundred sixty-four thousand, six hundred thirty-one".