717870720 has 256 divisors, whose sum is σ = 2701025280. Its totient is φ = 158699520.

The previous prime is 717870719. The next prime is 717870721. The reversal of 717870720 is 27078717.

It is an interprime number because it is at equal distance from previous prime (717870719) and next prime (717870721).

It is not an unprimeable number, because it can be changed into a prime (717870721) 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 31 ways as a sum of consecutive naturals, for example, 415779 + ... + 417501.

It is an arithmetic number, because the mean of its divisors is an integer number (10550880).

Almost surely, 2^717870720 is an apocalyptic number.

717870720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 717870720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350512640).

717870720 is an abundant number, since it is smaller than the sum of its proper divisors (1983154560).

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

717870720 is a wasteful number, since it uses less digits than its factorization.

717870720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 717870720 is about 26793.1095619751. The cubic root of 717870720 is about 895.3965430671.

The spelling of 717870720 in words is "seven hundred seventeen million, eight hundred seventy thousand, seven hundred twenty".