76723881 has 32 divisors (see below), whose sum is σ = 118487040. Its totient is φ = 43758144.

The previous prime is 76723877. The next prime is 76723939. The reversal of 76723881 is 18832767.

It is not a de Polignac number, because 76723881 - 2² = 76723877 is a prime.

It is a super-2 number, since 2×76723881² = 11773107831404322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76723831) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33726 + ... + 35928.

It is an arithmetic number, because the mean of its divisors is an integer number (3702720).

Almost surely, 2^76723881 is an apocalyptic number.

It is an amenable number.

76723881 is a deficient number, since it is larger than the sum of its proper divisors (41763159).

76723881 is a wasteful number, since it uses less digits than its factorization.

76723881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285.

The product of its digits is 112896, while the sum is 42.

The square root of 76723881 is about 8759.2169170537. The cubic root of 76723881 is about 424.9229498152.

The spelling of 76723881 in words is "seventy-six million, seven hundred twenty-three thousand, eight hundred eighty-one".