722270660 has 12 divisors (see below), whose sum is σ = 1516768428. Its totient is φ = 288908256.

The previous prime is 722270657. The next prime is 722270671. The reversal of 722270660 is 66072227.

722270660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110796676 + 611473984 = 10526^2 + 24728^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18056747 + ... + 18056786.

It is an arithmetic number, because the mean of its divisors is an integer number (126397369).

Almost surely, 2^722270660 is an apocalyptic number.

It is an amenable number.

722270660 is an abundant number, since it is smaller than the sum of its proper divisors (794497768).

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

722270660 is a wasteful number, since it uses less digits than its factorization.

722270660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36113542 (or 36113540 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 722270660 is about 26875.0936742554. The cubic root of 722270660 is about 897.2221593243. Note that the first 3 decimals are identical.

The spelling of 722270660 in words is "seven hundred twenty-two million, two hundred seventy thousand, six hundred sixty".