720730744 has 16 divisors (see below), whose sum is σ = 1356981120. Its totient is φ = 358869120.

The previous prime is 720730741. The next prime is 720730757. The reversal of 720730744 is 447037027.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720730741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184984 + ... + 188839.

It is an arithmetic number, because the mean of its divisors is an integer number (84811320).

Almost surely, 2^720730744 is an apocalyptic number.

It is an amenable number.

720730744 is a deficient number, since it is larger than the sum of its proper divisors (636250376).

720730744 is a wasteful number, since it uses less digits than its factorization.

720730744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374070 (or 374066 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 720730744 is about 26846.4288872841. The cubic root of 720730744 is about 896.5840652724.

The spelling of 720730744 in words is "seven hundred twenty million, seven hundred thirty thousand, seven hundred forty-four".