715889664 has 308 divisors, whose sum is σ = 2470057584. Its totient is φ = 203046912.

The previous prime is 715889627. The next prime is 715889683. The reversal of 715889664 is 466988517.

It is a super-2 number, since 2×715889664² = 1024996022044065792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 715889664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5225404 + ... + 5225540.

Almost surely, 2^715889664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 715889664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235028792).

715889664 is an abundant number, since it is smaller than the sum of its proper divisors (1754167920).

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

715889664 is an equidigital number, since it uses as much as digits as its factorization.

715889664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 149 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 715889664 is about 26756.1145161251. The cubic root of 715889664 is about 894.5721305116.

The spelling of 715889664 in words is "seven hundred fifteen million, eight hundred eighty-nine thousand, six hundred sixty-four".