77553964 has 12 divisors (see below), whose sum is σ = 135817024. Its totient is φ = 38749104.

The previous prime is 77553943. The next prime is 77553979. The reversal of 77553964 is 46935577.

It is a super-2 number, since 2×77553964² = 12029234664226592, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 82 + ... + 12454.

Almost surely, 2^77553964 is an apocalyptic number.

It is an amenable number.

77553964 is a deficient number, since it is larger than the sum of its proper divisors (58263060).

77553964 is a wasteful number, since it uses less digits than its factorization.

77553964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944 (or 13942 counting only the distinct ones).

The product of its digits is 793800, while the sum is 46.

The square root of 77553964 is about 8806.4728467191. The cubic root of 77553964 is about 426.4498836352.

The spelling of 77553964 in words is "seventy-seven million, five hundred fifty-three thousand, nine hundred sixty-four".