77953964 has 48 divisors (see below), whose sum is σ = 156097536. Its totient is φ = 33739200.

The previous prime is 77953957. The next prime is 77953991. The reversal of 77953964 is 46935977.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90962 + ... + 91814.

It is an arithmetic number, because the mean of its divisors is an integer number (3252032).

Almost surely, 2^77953964 is an apocalyptic number.

It is an amenable number.

77953964 is an abundant number, since it is smaller than the sum of its proper divisors (78143572).

77953964 is a wasteful number, since it uses less digits than its factorization.

77953964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 964 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 50.

The square root of 77953964 is about 8829.1542063779. The cubic root of 77953964 is about 427.1817934583.

The spelling of 77953964 in words is "seventy-seven million, nine hundred fifty-three thousand, nine hundred sixty-four".