77975296 has 72 divisors (see below), whose sum is σ = 181458144. Its totient is φ = 32747520.

The previous prime is 77975269. The next prime is 77975327. The reversal of 77975296 is 69257977.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94566 + ... + 95386.

It is an arithmetic number, because the mean of its divisors is an integer number (2520252).

Almost surely, 2^77975296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77975296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90729072).

77975296 is an abundant number, since it is smaller than the sum of its proper divisors (103482848).

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

77975296 is an equidigital number, since it uses as much as digits as its factorization.

77975296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 883 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 52.

The square root of 77975296 is about 8830.3621669782. The cubic root of 77975296 is about 427.2207558171.

The spelling of 77975296 in words is "seventy-seven million, nine hundred seventy-five thousand, two hundred ninety-six".