86697291 has 4 divisors (see below), whose sum is σ = 115596392. Its totient is φ = 57798192.

The previous prime is 86697223. The next prime is 86697301. The reversal of 86697291 is 19279668.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86697291 - 2²³ = 78308683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86697291.

It is not an unprimeable number, because it can be changed into a prime (86697691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14449546 + ... + 14449551.

It is an arithmetic number, because the mean of its divisors is an integer number (28899098).

Almost surely, 2^86697291 is an apocalyptic number.

86697291 is a deficient number, since it is larger than the sum of its proper divisors (28899101).

86697291 is a wasteful number, since it uses less digits than its factorization.

86697291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28899100.

The product of its digits is 326592, while the sum is 48.

The square root of 86697291 is about 9311.1380077840. The cubic root of 86697291 is about 442.5902500332.

The spelling of 86697291 in words is "eighty-six million, six hundred ninety-seven thousand, two hundred ninety-one".