864526 has 16 divisors (see below), whose sum is σ = 1432368. Its totient is φ = 388800.

The previous prime is 864511. The next prime is 864533. The reversal of 864526 is 625468.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864526.

It is an unprimeable number.

864526 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 7 ways as a sum of consecutive naturals, for example, 661 + ... + 1471.

It is an arithmetic number, because the mean of its divisors is an integer number (89523).

2⁸⁶⁴⁵²⁶ is an apocalyptic number.

864526 is a deficient number, since it is larger than the sum of its proper divisors (567842).

864526 is a wasteful number, since it uses less digits than its factorization.

864526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 11520, while the sum is 31.

The square root of 864526 is about 929.7989029892. The cubic root of 864526 is about 95.2633872748.

The spelling of 864526 in words is "eight hundred sixty-four thousand, five hundred twenty-six".