86478057 has 8 divisors (see below), whose sum is σ = 128115680. Its totient is φ = 57652020.

The previous prime is 86478047. The next prime is 86478059. The reversal of 86478057 is 75087468.

It is not a de Polignac number, because 86478057 - 2⁸ = 86477801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86478059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601419 + ... + 1601472.

It is an arithmetic number, because the mean of its divisors is an integer number (16014460).

Almost surely, 2^86478057 is an apocalyptic number.

It is an amenable number.

86478057 is a deficient number, since it is larger than the sum of its proper divisors (41637623).

86478057 is a wasteful number, since it uses less digits than its factorization.

86478057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202900 (or 3202894 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 86478057 is about 9299.3578810582. The cubic root of 86478057 is about 442.2168714532.

The spelling of 86478057 in words is "eighty-six million, four hundred seventy-eight thousand, fifty-seven".