86515776 has 84 divisors (see below), whose sum is σ = 257212592. Its totient is φ = 28833408.

The previous prime is 86515763. The next prime is 86515783. The reversal of 86515776 is 67751568.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12771 + ... + 18333.

Almost surely, 2^86515776 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 86515776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128606296).

86515776 is an abundant number, since it is smaller than the sum of its proper divisors (170696816).

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

86515776 is an equidigital number, since it uses as much as digits as its factorization.

86515776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590 (or 5568 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 86515776 is about 9301.3857032165. The cubic root of 86515776 is about 442.2811557901.

It can be divided in two parts, 865 and 15776, that added together give a square (16641 = 129²).

The spelling of 86515776 in words is "eighty-six million, five hundred fifteen thousand, seven hundred seventy-six".