720346504 has 16 divisors (see below), whose sum is σ = 1394219520. Its totient is φ = 348554640.

The previous prime is 720346493. The next prime is 720346513. The reversal of 720346504 is 405643027.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452064 + ... + 1452559.

It is an arithmetic number, because the mean of its divisors is an integer number (87138720).

Almost surely, 2^720346504 is an apocalyptic number.

It is an amenable number.

720346504 is a deficient number, since it is larger than the sum of its proper divisors (673873016).

720346504 is a wasteful number, since it uses less digits than its factorization.

720346504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904660 (or 2904656 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 720346504 is about 26839.2716741718. The cubic root of 720346504 is about 896.4247063147.

The spelling of 720346504 in words is "seven hundred twenty million, three hundred forty-six thousand, five hundred four".