864712 has 8 divisors (see below), whose sum is σ = 1621350. Its totient is φ = 432352.

The previous prime is 864707. The next prime is 864733. The reversal of 864712 is 217468.

It can be written as a sum of positive squares in only one way, i.e., 715716 + 148996 = 846^2 + 386^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

864712 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 as a sum of consecutive naturals, namely, 54037 + ... + 54052.

2⁸⁶⁴⁷¹² is an apocalyptic number.

It is an amenable number.

864712 is a deficient number, since it is larger than the sum of its proper divisors (756638).

864712 is a wasteful number, since it uses less digits than its factorization.

864712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108095 (or 108091 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 864712 is about 929.8989192380. The cubic root of 864712 is about 95.2702186557.

The spelling of 864712 in words is "eight hundred sixty-four thousand, seven hundred twelve".