86997723 has 16 divisors (see below), whose sum is σ = 117926400. Its totient is φ = 57039840.

The previous prime is 86997697. The next prime is 86997731. The reversal of 86997723 is 32779968.

It is not a de Polignac number, because 86997723 - 2²⁰ = 85949147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86997763) 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, 77893 + ... + 79001.

It is an arithmetic number, because the mean of its divisors is an integer number (7370400).

Almost surely, 2^86997723 is an apocalyptic number.

86997723 is a deficient number, since it is larger than the sum of its proper divisors (30928677).

86997723 is a wasteful number, since it uses less digits than its factorization.

86997723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522.

The product of its digits is 1143072, while the sum is 51.

The square root of 86997723 is about 9327.2569922781. The cubic root of 86997723 is about 443.1008964286.

The spelling of 86997723 in words is "eighty-six million, nine hundred ninety-seven thousand, seven hundred twenty-three".