76747986 has 40 divisors (see below), whose sum is σ = 196542720. Its totient is φ = 21927672.

The previous prime is 76747961. The next prime is 76748017. The reversal of 76747986 is 68974767.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 19 ways as a sum of consecutive naturals, for example, 32706 + ... + 34973.

It is an arithmetic number, because the mean of its divisors is an integer number (4913568).

Almost surely, 2^76747986 is an apocalyptic number.

76747986 is an abundant number, since it is smaller than the sum of its proper divisors (119794734).

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

76747986 is a wasteful number, since it uses less digits than its factorization.

76747986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67700 (or 67691 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 76747986 is about 8760.5927881622. The cubic root of 76747986 is about 424.9674457187.

The spelling of 76747986 in words is "seventy-six million, seven hundred forty-seven thousand, nine hundred eighty-six".