86782916 has 24 divisors (see below), whose sum is σ = 166289760. Its totient is φ = 39300800.

The previous prime is 86782907. The next prime is 86782961. The reversal of 86782916 is 61928768.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (6928740).

Almost surely, 2^86782916 is an apocalyptic number.

It is an amenable number.

86782916 is a deficient number, since it is larger than the sum of its proper divisors (79506844).

86782916 is a wasteful number, since it uses less digits than its factorization.

86782916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315 (or 7313 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 86782916 is about 9315.7348609758. The cubic root of 86782916 is about 442.7359074908.

The spelling of 86782916 in words is "eighty-six million, seven hundred eighty-two thousand, nine hundred sixteen".