722890560 has 224 divisors, whose sum is σ = 2652491520. Its totient is φ = 163381248.

The previous prime is 722890523. The next prime is 722890579. The reversal of 722890560 is 65098227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×722890560² = 1045141523474227200, which contains 22 as substring.

It is a congruent number.

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, 651286 + ... + 652394.

It is an arithmetic number, because the mean of its divisors is an integer number (11841480).

Almost surely, 2^722890560 is an apocalyptic number.

722890560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722890560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326245760).

722890560 is an abundant number, since it is smaller than the sum of its proper divisors (1929600960).

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

722890560 is a wasteful number, since it uses less digits than its factorization.

722890560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 722890560 is about 26886.6241837833. The cubic root of 722890560 is about 897.4787708709.

The spelling of 722890560 in words is "seven hundred twenty-two million, eight hundred ninety thousand, five hundred sixty".