722145605 has 16 divisors (see below), whose sum is σ = 905368320. Its totient is φ = 551916288.

The previous prime is 722145563. The next prime is 722145629. The reversal of 722145605 is 506541227.

It is a cyclic number.

It is not a de Polignac number, because 722145605 - 2¹² = 722141509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102269 + ... + 109101.

It is an arithmetic number, because the mean of its divisors is an integer number (56585520).

Almost surely, 2^722145605 is an apocalyptic number.

It is an amenable number.

722145605 is a deficient number, since it is larger than the sum of its proper divisors (183222715).

722145605 is a wasteful number, since it uses less digits than its factorization.

722145605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 722145605 is about 26872.7669769974. The cubic root of 722145605 is about 897.1703742159.

The spelling of 722145605 in words is "seven hundred twenty-two million, one hundred forty-five thousand, six hundred five".