715997440 has 72 divisors (see below), whose sum is σ = 1720577880. Its totient is φ = 285474816.

The previous prime is 715997437. The next prime is 715997453. The reversal of 715997440 is 44799517.

It can be written as a sum of positive squares in 4 ways, for example, as 3748096 + 712249344 = 1936^2 + 26688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507456 + ... + 508864.

It is an arithmetic number, because the mean of its divisors is an integer number (23896915).

Almost surely, 2^715997440 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 715997440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860288940).

715997440 is an abundant number, since it is smaller than the sum of its proper divisors (1004580440).

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

715997440 is a wasteful number, since it uses less digits than its factorization.

715997440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 715997440 is about 26758.1284846306. The cubic root of 715997440 is about 894.6170203752.

The spelling of 715997440 in words is "seven hundred fifteen million, nine hundred ninety-seven thousand, four hundred forty".