864832 has 14 divisors (see below), whose sum is σ = 1716278. Its totient is φ = 432384.

The previous prime is 864817. The next prime is 864883. The reversal of 864832 is 238468.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 746496 + 118336 = 864^2 + 344^2 .

It is a junction number, because it is equal to n+sod(n) for n = 864794 and 864803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6693 + ... + 6820.

2⁸⁶⁴⁸³² is an apocalyptic number.

It is an amenable number.

864832 is a deficient number, since it is larger than the sum of its proper divisors (851446).

864832 is a wasteful number, since it uses less digits than its factorization.

864832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13525 (or 13515 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 864832 is about 929.9634401416. The cubic root of 864832 is about 95.2746254785.

The spelling of 864832 in words is "eight hundred sixty-four thousand, eight hundred thirty-two".