722137616 has 20 divisors (see below), whose sum is σ = 1399650000. Its totient is φ = 360937632.

The previous prime is 722137607. The next prime is 722137627. The reversal of 722137616 is 616731227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49535 + ... + 62433.

It is an arithmetic number, because the mean of its divisors is an integer number (69982500).

Almost surely, 2^722137616 is an apocalyptic number.

It is an amenable number.

722137616 is a deficient number, since it is larger than the sum of its proper divisors (677512384).

722137616 is a wasteful number, since it uses less digits than its factorization.

722137616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406 (or 16400 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 722137616 is about 26872.6183316773. The cubic root of 722137616 is about 897.1670657785.

The spelling of 722137616 in words is "seven hundred twenty-two million, one hundred thirty-seven thousand, six hundred sixteen".