84590865 has 16 divisors (see below), whose sum is σ = 150384000. Its totient is φ = 45115056.

The previous prime is 84590839. The next prime is 84590879. The reversal of 84590865 is 56809548.

It is not a de Polignac number, because 84590865 - 2⁸ = 84590609 is a prime.

It is a super-2 number, since 2×84590865² = 14311228882896450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 84590865.

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, 313165 + ... + 313434.

It is an arithmetic number, because the mean of its divisors is an integer number (9399000).

Almost surely, 2^84590865 is an apocalyptic number.

It is an amenable number.

84590865 is a deficient number, since it is larger than the sum of its proper divisors (65793135).

84590865 is a wasteful number, since it uses less digits than its factorization.

84590865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626613 (or 626607 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 84590865 is about 9197.3292319021. The cubic root of 84590865 is about 438.9763825520.

The spelling of 84590865 in words is "eighty-four million, five hundred ninety thousand, eight hundred sixty-five".