86690520 has 128 divisors (see below), whose sum is σ = 330278400. Its totient is φ = 19813248.

The previous prime is 86690509. The next prime is 86690551. The reversal of 86690520 is 2509668.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1827 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (2580300).

Almost surely, 2^86690520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86690520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165139200).

86690520 is an abundant number, since it is smaller than the sum of its proper divisors (243587880).

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

86690520 is a wasteful number, since it uses less digits than its factorization.

86690520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494 (or 11484 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 86690520 is about 9310.7744038828. The cubic root of 86690520 is about 442.5787277331.

The spelling of 86690520 in words is "eighty-six million, six hundred ninety thousand, five hundred twenty".