715797720 has 384 divisors, whose sum is σ = 2749593600. Its totient is φ = 159667200.

The previous prime is 715797713. The next prime is 715797739. The reversal of 715797720 is 27797517.

715797720 is a `hidden beast` number, since 7 + 1 + 579 + 7 + 72 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2641185 + ... + 2641455.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2^715797720 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 715797720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374796800).

715797720 is an abundant number, since it is smaller than the sum of its proper divisors (2033795880).

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

715797720 is a wasteful number, since it uses less digits than its factorization.

715797720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 45.

The square root of 715797720 is about 26754.3962742574. The cubic root of 715797720 is about 894.5338312850.

The spelling of 715797720 in words is "seven hundred fifteen million, seven hundred ninety-seven thousand, seven hundred twenty".