864464 has 20 divisors (see below), whose sum is σ = 1695204. Its totient is φ = 427008.

The previous prime is 864449. The next prime is 864491. The reversal of 864464 is 464468.

It can be written as a sum of positive squares in 2 ways, for example, as 211600 + 652864 = 460^2 + 808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 864464.

It is a congruent number.

It is an unprimeable number.

864464 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274 + ... + 1830.

2⁸⁶⁴⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

864464 is a deficient number, since it is larger than the sum of its proper divisors (830740).

864464 is a wasteful number, since it uses less digits than its factorization.

864464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 656 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 864464 is about 929.7655618488. The cubic root of 864464 is about 95.2611099300.

The spelling of 864464 in words is "eight hundred sixty-four thousand, four hundred sixty-four".