8722660 has 24 divisors (see below), whose sum is σ = 18430776. Its totient is φ = 3467520.

The previous prime is 8722643. The next prime is 8722661. The reversal of 8722660 is 662278.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 289444 + 8433216 = 538^2 + 2904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200 + ... + 4720.

It is an arithmetic number, because the mean of its divisors is an integer number (767949).

Almost surely, 2^8722660 is an apocalyptic number.

It is an amenable number.

8722660 is an abundant number, since it is smaller than the sum of its proper divisors (9708116).

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

8722660 is a wasteful number, since it uses less digits than its factorization.

8722660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 8722660 is about 2953.4149725360. The cubic root of 8722660 is about 205.8494202306.

The spelling of 8722660 in words is "eight million, seven hundred twenty-two thousand, six hundred sixty".