722977164 has 360 divisors, whose sum is σ = 2465705088. Its totient is φ = 182891520.

The previous prime is 722977159. The next prime is 722977217. The reversal of 722977164 is 461779227.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6397972 + ... + 6398084.

Almost surely, 2^722977164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722977164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232852544).

722977164 is an abundant number, since it is smaller than the sum of its proper divisors (1742727924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722977164 is a wasteful number, since it uses less digits than its factorization.

722977164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 169 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 722977164 is about 26888.2346761553. The cubic root of 722977164 is about 897.5146094667.

The spelling of 722977164 in words is "seven hundred twenty-two million, nine hundred seventy-seven thousand, one hundred sixty-four".