722164 has 6 divisors (see below), whose sum is σ = 1263794. Its totient is φ = 361080.

The previous prime is 722159. The next prime is 722167. The reversal of 722164 is 461227.

It can be written as a sum of positive squares in only one way, i.e., 501264 + 220900 = 708^2 + 470^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90267 + ... + 90274.

2⁷²²¹⁶⁴ is an apocalyptic number.

It is an amenable number.

722164 is a deficient number, since it is larger than the sum of its proper divisors (541630).

722164 is a wasteful number, since it uses less digits than its factorization.

722164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180545 (or 180543 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 722164 is about 849.8023299568. The cubic root of 722164 is about 89.7177991936.

The spelling of 722164 in words is "seven hundred twenty-two thousand, one hundred sixty-four".