717157120 has 72 divisors (see below), whose sum is σ = 1727310816. Its totient is φ = 285278208.

The previous prime is 717157039. The next prime is 717157127. The reversal of 717157120 is 21751717.

717157120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (717157127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245589 + ... + 248491.

It is an arithmetic number, because the mean of its divisors is an integer number (23990428).

Almost surely, 2^717157120 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 717157120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863655408).

717157120 is an abundant number, since it is smaller than the sum of its proper divisors (1010153696).

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

717157120 is a wasteful number, since it uses less digits than its factorization.

717157120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 31.

The square root of 717157120 is about 26779.7893942428. The cubic root of 717157120 is about 895.0997548060.

The spelling of 717157120 in words is "seven hundred seventeen million, one hundred fifty-seven thousand, one hundred twenty".