720304775 has 12 divisors (see below), whose sum is σ = 907822104. Its totient is φ = 566796000.

The previous prime is 720304723. The next prime is 720304817. The reversal of 720304775 is 577403027.

It is not a de Polignac number, because 720304775 - 2²⁶ = 653195911 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 11 ways as a sum of consecutive naturals, for example, 234641 + ... + 237690.

It is an arithmetic number, because the mean of its divisors is an integer number (75651842).

Almost surely, 2^720304775 is an apocalyptic number.

720304775 is a deficient number, since it is larger than the sum of its proper divisors (187517329).

720304775 is a wasteful number, since it uses less digits than its factorization.

720304775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472402 (or 472397 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 720304775 is about 26838.4942759463. The cubic root of 720304775 is about 896.4073962985.

The spelling of 720304775 in words is "seven hundred twenty million, three hundred four thousand, seven hundred seventy-five".