718703664 has 40 divisors (see below), whose sum is σ = 2121888000. Its totient is φ = 205343808.

The previous prime is 718703639. The next prime is 718703669. The reversal of 718703664 is 466307817.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (718703669) by changing a digit.

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, 1069164 + ... + 1069835.

It is an arithmetic number, because the mean of its divisors is an integer number (53047200).

Almost surely, 2^718703664 is an apocalyptic number.

It is an amenable number.

718703664 is an abundant number, since it is smaller than the sum of its proper divisors (1403184336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

718703664 is a wasteful number, since it uses less digits than its factorization.

718703664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139017 (or 2139011 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 718703664 is about 26808.6490521250. The cubic root of 718703664 is about 895.7427181686.

The spelling of 718703664 in words is "seven hundred eighteen million, seven hundred three thousand, six hundred sixty-four".