722606520 has 64 divisors (see below), whose sum is σ = 2189319840. Its totient is φ = 190784000.

The previous prime is 722606519. The next prime is 722606531. The reversal of 722606520 is 25606227.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17691 + ... + 41930.

Almost surely, 2^722606520 is an apocalyptic number.

It is an amenable number.

722606520 is an abundant number, since it is smaller than the sum of its proper divisors (1466713320).

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

722606520 is a wasteful number, since it uses less digits than its factorization.

722606520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59736 (or 59732 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 722606520 is about 26881.3414843828. The cubic root of 722606520 is about 897.3612089238.

The spelling of 722606520 in words is "seven hundred twenty-two million, six hundred six thousand, five hundred twenty".