864993 has 16 divisors (see below), whose sum is σ = 1216512. Its totient is φ = 546000.

The previous prime is 864989. The next prime is 865001. The reversal of 864993 is 399468.

864993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864993 - 2² = 864989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6538 + ... + 6668.

It is an arithmetic number, because the mean of its divisors is an integer number (76032).

2⁸⁶⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

864993 is a deficient number, since it is larger than the sum of its proper divisors (351519).

864993 is a wasteful number, since it uses less digits than its factorization.

864993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236.

The product of its digits is 46656, while the sum is 39.

The square root of 864993 is about 930.0499986560. The cubic root of 864993 is about 95.2805373253.

It can be divided in two parts, 8649 and 93, that multiplied together give a cube (804357 = 93³).

The spelling of 864993 in words is "eight hundred sixty-four thousand, nine hundred ninety-three".