864766 has 16 divisors (see below), whose sum is σ = 1560960. Its totient is φ = 351000.

The previous prime is 864757. The next prime is 864781. The reversal of 864766 is 667468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360 + ... + 1891.

It is an arithmetic number, because the mean of its divisors is an integer number (97560).

2⁸⁶⁴⁷⁶⁶ is an apocalyptic number.

864766 is a deficient number, since it is larger than the sum of its proper divisors (696194).

864766 is a wasteful number, since it uses less digits than its factorization.

864766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279.

The product of its digits is 48384, while the sum is 37.

The square root of 864766 is about 929.9279541986. The cubic root of 864766 is about 95.2722017764.

The spelling of 864766 in words is "eight hundred sixty-four thousand, seven hundred sixty-six".