77073864 has 48 divisors (see below), whose sum is σ = 224146800. Its totient is φ = 22020768.

The previous prime is 77073853. The next prime is 77073881. The reversal of 77073864 is 46837077.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31594 + ... + 33945.

It is an arithmetic number, because the mean of its divisors is an integer number (4669725).

Almost surely, 2^77073864 is an apocalyptic number.

It is an amenable number.

77073864 is an abundant number, since it is smaller than the sum of its proper divisors (147072936).

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

77073864 is a wasteful number, since it uses less digits than its factorization.

77073864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65562 (or 65551 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 77073864 is about 8779.1721705409. The cubic root of 77073864 is about 425.5680781690.

The spelling of 77073864 in words is "seventy-seven million, seventy-three thousand, eight hundred sixty-four".