86140656 has 120 divisors (see below), whose sum is σ = 278669664. Its totient is φ = 24330240.

The previous prime is 86140609. The next prime is 86140669. The reversal of 86140656 is 65604168.

It is a super-2 number, since 2×86140656² = 14840425232220672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 86140656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97336 + ... + 98216.

Almost surely, 2^86140656 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 86140656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139334832).

86140656 is an abundant number, since it is smaller than the sum of its proper divisors (192529008).

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

86140656 is a wasteful number, since it uses less digits than its factorization.

86140656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 86140656 is about 9281.1990604663. The cubic root of 86140656 is about 441.6410071403.

The spelling of 86140656 in words is "eighty-six million, one hundred forty thousand, six hundred fifty-six".