722172705 has 16 divisors (see below), whose sum is σ = 1156550400. Its totient is φ = 384800768.

The previous prime is 722172643. The next prime is 722172707. The reversal of 722172705 is 507271227.

722172705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 722172705 - 2¹⁴ = 722156321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722172707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5280 + ... + 38369.

It is an arithmetic number, because the mean of its divisors is an integer number (72284400).

Almost surely, 2^722172705 is an apocalyptic number.

It is an amenable number.

722172705 is a deficient number, since it is larger than the sum of its proper divisors (434377695).

722172705 is a wasteful number, since it uses less digits than its factorization.

722172705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44760.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 722172705 is about 26873.2712002093. The cubic root of 722172705 is about 897.1815967971.

The spelling of 722172705 in words is "seven hundred twenty-two million, one hundred seventy-two thousand, seven hundred five".