720380522 has 8 divisors (see below), whose sum is σ = 1081908900. Its totient is φ = 359744224.

The previous prime is 720380513. The next prime is 720380567. The reversal of 720380522 is 225083027.

It can be written as a sum of positive squares in 2 ways, for example, as 706549561 + 13830961 = 26581^2 + 3719^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 220997 + ... + 224232.

Almost surely, 2^720380522 is an apocalyptic number.

720380522 is a deficient number, since it is larger than the sum of its proper divisors (361528378).

720380522 is a wasteful number, since it uses less digits than its factorization.

720380522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446040.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 720380522 is about 26839.9054022178. The cubic root of 720380522 is about 896.4388171606.

The spelling of 720380522 in words is "seven hundred twenty million, three hundred eighty thousand, five hundred twenty-two".