720581608 has 16 divisors (see below), whose sum is σ = 1394674560. Its totient is φ = 348668400.

The previous prime is 720581591. The next prime is 720581611. The reversal of 720581608 is 806185027.

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, 1452538 + ... + 1453033.

It is an arithmetic number, because the mean of its divisors is an integer number (87167160).

Almost surely, 2^720581608 is an apocalyptic number.

It is an amenable number.

720581608 is a deficient number, since it is larger than the sum of its proper divisors (674092952).

720581608 is a wasteful number, since it uses less digits than its factorization.

720581608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905608 (or 2905604 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 720581608 is about 26843.6511674548. The cubic root of 720581608 is about 896.5222196220.

The spelling of 720581608 in words is "seven hundred twenty million, five hundred eighty-one thousand, six hundred eight".