722954661 has 16 divisors (see below), whose sum is σ = 1132461120. Its totient is φ = 404449920.

The previous prime is 722954641. The next prime is 722954719. The reversal of 722954661 is 166459227.

It is not a de Polignac number, because 722954661 - 2⁹ = 722954149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722954641) 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, 842176 + ... + 843033.

It is an arithmetic number, because the mean of its divisors is an integer number (70778820).

Almost surely, 2^722954661 is an apocalyptic number.

It is an amenable number.

722954661 is a deficient number, since it is larger than the sum of its proper divisors (409506459).

722954661 is a wasteful number, since it uses less digits than its factorization.

722954661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685236.

The product of its digits is 181440, while the sum is 42.

The square root of 722954661 is about 26887.8162185031. The cubic root of 722954661 is about 897.5052975171.

The spelling of 722954661 in words is "seven hundred twenty-two million, nine hundred fifty-four thousand, six hundred sixty-one".