720512297 has 8 divisors (see below), whose sum is σ = 737248200. Its totient is φ = 703935360.

The previous prime is 720512291. The next prime is 720512333. The reversal of 720512297 is 792215027.

It can be written as a sum of positive squares in 4 ways, for example, as 64947481 + 655564816 = 8059^2 + 25604^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720512297 - 2⁸ = 720512041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720512291) 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, 30548 + ... + 48725.

It is an arithmetic number, because the mean of its divisors is an integer number (92156025).

Almost surely, 2^720512297 is an apocalyptic number.

It is an amenable number.

720512297 is a deficient number, since it is larger than the sum of its proper divisors (16735903).

720512297 is a wasteful number, since it uses less digits than its factorization.

720512297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79483.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 720512297 is about 26842.3601235063. The cubic root of 720512297 is about 896.4934739332.

The spelling of 720512297 in words is "seven hundred twenty million, five hundred twelve thousand, two hundred ninety-seven".