77077320 has 64 divisors (see below), whose sum is σ = 244840320. Its totient is φ = 19344384.

The previous prime is 77077313. The next prime is 77077333. The reversal of 77077320 is 2377077.

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, 16852 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (3825630).

Almost surely, 2^77077320 is an apocalyptic number.

It is an amenable number.

77077320 is an abundant number, since it is smaller than the sum of its proper divisors (167763000).

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

77077320 is a wasteful number, since it uses less digits than its factorization.

77077320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37814 (or 37810 counting only the distinct ones).

The product of its (nonzero) digits is 14406, while the sum is 33.

The square root of 77077320 is about 8779.3689978267. The cubic root of 77077320 is about 425.5744389128.

The spelling of 77077320 in words is "seventy-seven million, seventy-seven thousand, three hundred twenty".