86569992 has 64 divisors (see below), whose sum is σ = 244584000. Its totient is φ = 28363392.

The previous prime is 86569991. The next prime is 86570027. The reversal of 86569992 is 29996568.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (86569991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9348 + ... + 16140.

It is an arithmetic number, because the mean of its divisors is an integer number (3821625).

Almost surely, 2^86569992 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 86569992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122292000).

86569992 is an abundant number, since it is smaller than the sum of its proper divisors (158014008).

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

86569992 is a wasteful number, since it uses less digits than its factorization.

86569992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867 (or 6857 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 86569992 is about 9304.2996512365. The cubic root of 86569992 is about 442.3735231755.

The spelling of 86569992 in words is "eighty-six million, five hundred sixty-nine thousand, nine hundred ninety-two".