718864 has 20 divisors (see below), whose sum is σ = 1406160. Its totient is φ = 356000.

The previous prime is 718847. The next prime is 718871. The reversal of 718864 is 468817.

It is a happy number.

It is an unprimeable number.

718864 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 3 ways as a sum of consecutive naturals, for example, 2739 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁷¹⁸⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

718864 is a deficient number, since it is larger than the sum of its proper divisors (687296).

718864 is a wasteful number, since it uses less digits than its factorization.

718864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 432 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 718864 is about 847.8584787569. The cubic root of 718864 is about 89.5809323796.

Subtracting from 718864 its reverse (468817), we obtain a cube (250047 = 63³).

The spelling of 718864 in words is "seven hundred eighteen thousand, eight hundred sixty-four".