86457864 has 32 divisors (see below), whose sum is σ = 221173920. Its totient is φ = 28148736.

The previous prime is 86457857. The next prime is 86457871. The reversal of 86457864 is 46875468.

It is an interprime number because it is at equal distance from previous prime (86457857) and next prime (86457871).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 40857 + ... + 42920.

It is an arithmetic number, because the mean of its divisors is an integer number (6911685).

Almost surely, 2^86457864 is an apocalyptic number.

It is an amenable number.

86457864 is an abundant number, since it is smaller than the sum of its proper divisors (134716056).

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

86457864 is a wasteful number, since it uses less digits than its factorization.

86457864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83829 (or 83825 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 86457864 is about 9298.2720975459. The cubic root of 86457864 is about 442.1824489236.

The spelling of 86457864 in words is "eighty-six million, four hundred fifty-seven thousand, eight hundred sixty-four".