864536 has 16 divisors (see below), whose sum is σ = 1652400. Its totient is φ = 423904.

The previous prime is 864533. The next prime is 864541. The reversal of 864536 is 635468.

864536 = T₇₁ + T₇₂ + ... + T₁₇₆.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (103275).

2⁸⁶⁴⁵³⁶ is an apocalyptic number.

It is an amenable number.

864536 is a deficient number, since it is larger than the sum of its proper divisors (787864).

864536 is a wasteful number, since it uses less digits than its factorization.

864536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2094 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 864536 is about 929.8042804806. The cubic root of 864536 is about 95.2637545782.

The spelling of 864536 in words is "eight hundred sixty-four thousand, five hundred thirty-six".