722402390705 has 16 divisors (see below), whose sum is σ = 888082928208. Its totient is φ = 563790336000.

The previous prime is 722402390693. The next prime is 722402390729. The reversal of 722402390705 is 507093204227.

It can be written as a sum of positive squares in 8 ways, for example, as 17986081 + 722384404624 = 4241^2 + 849932^2 .

It is not a de Polignac number, because 722402390705 - 2²⁶ = 722335281841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3377345 + ... + 3584865.

It is an arithmetic number, because the mean of its divisors is an integer number (55505183013).

Almost surely, 2^722402390705 is an apocalyptic number.

It is an amenable number.

722402390705 is a deficient number, since it is larger than the sum of its proper divisors (165680537503).

722402390705 is a wasteful number, since it uses less digits than its factorization.

722402390705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224548.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 722402390705 in words is "seven hundred twenty-two billion, four hundred two million, three hundred ninety thousand, seven hundred five".