722625660 has 36 divisors (see below), whose sum is σ = 2191965048. Its totient is φ = 192700128.

The previous prime is 722625623. The next prime is 722625721. The reversal of 722625660 is 66526227.

722625660 is a `hidden beast` number, since 7 + 22 + 625 + 6 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2007114 + ... + 2007473.

It is an arithmetic number, because the mean of its divisors is an integer number (60887918).

Almost surely, 2^722625660 is an apocalyptic number.

It is an amenable number.

722625660 is an abundant number, since it is smaller than the sum of its proper divisors (1469339388).

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

722625660 is a wasteful number, since it uses less digits than its factorization.

722625660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014602 (or 4014597 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 722625660 is about 26881.6974910440. The cubic root of 722625660 is about 897.3691317889.

The spelling of 722625660 in words is "seven hundred twenty-two million, six hundred twenty-five thousand, six hundred sixty".