86868544 has 56 divisors (see below), whose sum is σ = 199136000. Its totient is φ = 36827136.

The previous prime is 86868527. The next prime is 86868559. The reversal of 86868544 is 44586868.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×86868544² = 15092287873359872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42457 + ... + 44455.

It is an arithmetic number, because the mean of its divisors is an integer number (3556000).

Almost surely, 2^86868544 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 86868544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99568000).

86868544 is an abundant number, since it is smaller than the sum of its proper divisors (112267456).

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

86868544 is a wasteful number, since it uses less digits than its factorization.

86868544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2105 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The square root of 86868544 is about 9320.3296079055. The cubic root of 86868544 is about 442.8814742689.

The spelling of 86868544 in words is "eighty-six million, eight hundred sixty-eight thousand, five hundred forty-four".