86569473 has 4 divisors (see below), whose sum is σ = 115425968. Its totient is φ = 57712980.

The previous prime is 86569451. The next prime is 86569489. The reversal of 86569473 is 37496568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86569473 - 2²² = 82375169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86569403) 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, 14428243 + ... + 14428248.

It is an arithmetic number, because the mean of its divisors is an integer number (28856492).

Almost surely, 2^86569473 is an apocalyptic number.

It is an amenable number.

86569473 is a deficient number, since it is larger than the sum of its proper divisors (28856495).

86569473 is a wasteful number, since it uses less digits than its factorization.

86569473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28856494.

The product of its digits is 1088640, while the sum is 48.

The square root of 86569473 is about 9304.2717608634. The cubic root of 86569473 is about 442.3726391420.

The spelling of 86569473 in words is "eighty-six million, five hundred sixty-nine thousand, four hundred seventy-three".