86537865 has 16 divisors (see below), whose sum is σ = 138840768. Its totient is φ = 46026816.

The previous prime is 86537849. The next prime is 86537873. The reversal of 86537865 is 56873568.

It is not a de Polignac number, because 86537865 - 2⁴ = 86537849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (8677548).

Almost surely, 2^86537865 is an apocalyptic number.

It is an amenable number.

86537865 is a deficient number, since it is larger than the sum of its proper divisors (52302903).

86537865 is a wasteful number, since it uses less digits than its factorization.

86537865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15848.

The product of its digits is 1209600, while the sum is 48.

The square root of 86537865 is about 9302.5730311565. The cubic root of 86537865 is about 442.3187933077.

The spelling of 86537865 in words is "eighty-six million, five hundred thirty-seven thousand, eight hundred sixty-five".