722166705 has 32 divisors (see below), whose sum is σ = 1382613120. Its totient is φ = 355527360.

The previous prime is 722166691. The next prime is 722166727. The reversal of 722166705 is 507661227.

722166705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 722166705 - 2⁴ = 722166689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722166705.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203991 + ... + 207500.

It is an arithmetic number, because the mean of its divisors is an integer number (43206660).

Almost surely, 2^722166705 is an apocalyptic number.

It is an amenable number.

722166705 is a deficient number, since it is larger than the sum of its proper divisors (660446415).

722166705 is a wasteful number, since it uses less digits than its factorization.

722166705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411518 (or 411512 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 722166705 is about 26873.1595648893. The cubic root of 722166705 is about 897.1791121169.

The spelling of 722166705 in words is "seven hundred twenty-two million, one hundred sixty-six thousand, seven hundred five".