721122704 has 40 divisors (see below), whose sum is σ = 1409755008. Its totient is φ = 357333120.

The previous prime is 721122683. The next prime is 721122707. The reversal of 721122704 is 407221127.

It is not an unprimeable number, because it can be changed into a prime (721122707) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1332674 + ... + 1333214.

Almost surely, 2^721122704 is an apocalyptic number.

It is an amenable number.

721122704 is a deficient number, since it is larger than the sum of its proper divisors (688632304).

721122704 is a wasteful number, since it uses less digits than its factorization.

721122704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 721122704 is about 26853.7279348697. The cubic root of 721122704 is about 896.7465676616.

The spelling of 721122704 in words is "seven hundred twenty-one million, one hundred twenty-two thousand, seven hundred four".