86868523 has 16 divisors (see below), whose sum is σ = 101708800. Its totient is φ = 74162088.

The previous prime is 86868517. The next prime is 86868527. The reversal of 86868523 is 32586868.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-86868523 is a prime.

It is a super-2 number, since 2×86868523² = 15092280576403058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86868527) 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, 158536 + ... + 159082.

It is an arithmetic number, because the mean of its divisors is an integer number (6356800).

Almost surely, 2^86868523 is an apocalyptic number.

86868523 is a deficient number, since it is larger than the sum of its proper divisors (14840277).

86868523 is an equidigital number, since it uses as much as digits as its factorization.

86868523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1017 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 86868523 is about 9320.3284813358. The cubic root of 86868523 is about 442.8814385809.

The spelling of 86868523 in words is "eighty-six million, eight hundred sixty-eight thousand, five hundred twenty-three".