86156560 has 80 divisors (see below), whose sum is σ = 230806656. Its totient is φ = 29297664.

The previous prime is 86156557. The next prime is 86156599. The reversal of 86156560 is 6565168.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 76159 + ... + 77281.

Almost surely, 2^86156560 is an apocalyptic number.

86156560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86156560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115403328).

86156560 is an abundant number, since it is smaller than the sum of its proper divisors (144650096).

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

86156560 is a wasteful number, since it uses less digits than its factorization.

86156560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 86156560 is about 9282.0558067704. The cubic root of 86156560 is about 441.6681852723.

The spelling of 86156560 in words is "eighty-six million, one hundred fifty-six thousand, five hundred sixty".