8661265722 has 12 divisors (see below), whose sum is σ = 18766075770. Its totient is φ = 2887088568.

The previous prime is 8661265681. The next prime is 8661265751. The reversal of 8661265722 is 2275621668.

8661265722 is a `hidden beast` number, since 8 + 6 + 612 + 6 + 5 + 7 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8283002121 + 378263601 = 91011^2 + 19449^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240590697 + ... + 240590732.

Almost surely, 2^8661265722 is an apocalyptic number.

8661265722 is an abundant number, since it is smaller than the sum of its proper divisors (10104810048).

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

8661265722 is a wasteful number, since it uses less digits than its factorization.

8661265722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481181437 (or 481181434 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 8661265722 is about 93065.9213783434. The cubic root of 8661265722 is about 2053.6532693258.

The spelling of 8661265722 in words is "eight billion, six hundred sixty-one million, two hundred sixty-five thousand, seven hundred twenty-two".