86647256 has 32 divisors (see below), whose sum is σ = 170069760. Its totient is φ = 41307552.

The previous prime is 86647247. The next prime is 86647291. The reversal of 86647256 is 65274668.

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, 80981 + ... + 82043.

It is an arithmetic number, because the mean of its divisors is an integer number (5314680).

Almost surely, 2^86647256 is an apocalyptic number.

It is an amenable number.

86647256 is a deficient number, since it is larger than the sum of its proper divisors (83422504).

86647256 is a wasteful number, since it uses less digits than its factorization.

86647256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1531 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 86647256 is about 9308.4507840994. The cubic root of 86647256 is about 442.5050906455.

The spelling of 86647256 in words is "eighty-six million, six hundred forty-seven thousand, two hundred fifty-six".