864644367 has 32 divisors (see below), whose sum is σ = 1228308480. Its totient is φ = 540046080.

The previous prime is 864644329. The next prime is 864644393. The reversal of 864644367 is 763446468.

It is not a de Polignac number, because 864644367 - 2⁸ = 864644111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864644867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794898 + ... + 795984.

It is an arithmetic number, because the mean of its divisors is an integer number (38384640).

Almost surely, 2^864644367 is an apocalyptic number.

864644367 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

864644367 is a deficient number, since it is larger than the sum of its proper divisors (363664113).

864644367 is a wasteful number, since it uses less digits than its factorization.

864644367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383.

The product of its digits is 2322432, while the sum is 48.

The square root of 864644367 is about 29404.8357757699. The cubic root of 864644367 is about 952.6773475410.

The spelling of 864644367 in words is "eight hundred sixty-four million, six hundred forty-four thousand, three hundred sixty-seven".