720517375 has 16 divisors (see below), whose sum is σ = 952102944. Its totient is φ = 542505600.

The previous prime is 720517361. The next prime is 720517403. The reversal of 720517375 is 573715027.

It is not a de Polignac number, because 720517375 - 2⁷ = 720517247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167409 + ... + 171658.

It is an arithmetic number, because the mean of its divisors is an integer number (59506434).

Almost surely, 2^720517375 is an apocalyptic number.

720517375 is a deficient number, since it is larger than the sum of its proper divisors (231585569).

720517375 is a wasteful number, since it uses less digits than its factorization.

720517375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339099 (or 339089 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 720517375 is about 26842.4547126376. The cubic root of 720517375 is about 896.4955800194.

The spelling of 720517375 in words is "seven hundred twenty million, five hundred seventeen thousand, three hundred seventy-five".