722070668 has 24 divisors (see below), whose sum is σ = 1391390784. Its totient is φ = 325144400.

The previous prime is 722070659. The next prime is 722070697. The reversal of 722070668 is 866070227.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71978 + ... + 81393.

It is an arithmetic number, because the mean of its divisors is an integer number (57974616).

Almost surely, 2^722070668 is an apocalyptic number.

It is an amenable number.

722070668 is a deficient number, since it is larger than the sum of its proper divisors (669320116).

722070668 is a wasteful number, since it uses less digits than its factorization.

722070668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153493 (or 153491 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 722070668 is about 26871.3726482292. The cubic root of 722070668 is about 897.1393400396.

The spelling of 722070668 in words is "seven hundred twenty-two million, seventy thousand, six hundred sixty-eight".