864814765 has 16 divisors (see below), whose sum is σ = 1052243136. Its totient is φ = 682240000.

The previous prime is 864814733. The next prime is 864814777. The reversal of 864814765 is 567418468.

It is not a de Polignac number, because 864814765 - 2⁵ = 864814733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264390 + ... + 267640.

It is an arithmetic number, because the mean of its divisors is an integer number (65765196).

Almost surely, 2^864814765 is an apocalyptic number.

It is an amenable number.

864814765 is a deficient number, since it is larger than the sum of its proper divisors (187428371).

864814765 is a wasteful number, since it uses less digits than its factorization.

864814765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980.

The product of its digits is 1290240, while the sum is 49.

The square root of 864814765 is about 29407.7330816233. The cubic root of 864814765 is about 952.7399257362.

The spelling of 864814765 in words is "eight hundred sixty-four million, eight hundred fourteen thousand, seven hundred sixty-five".