8253561660 has 48 divisors (see below), whose sum is σ = 23120197632. Its totient is φ = 2199976000.

The previous prime is 8253561647. The next prime is 8253561671. The reversal of 8253561660 is 661653528.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111805 + ... + 170315.

It is an arithmetic number, because the mean of its divisors is an integer number (481670784).

Almost surely, 2^8253561660 is an apocalyptic number.

It is an amenable number.

8253561660 is an abundant number, since it is smaller than the sum of its proper divisors (14866635972).

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

8253561660 is a wasteful number, since it uses less digits than its factorization.

8253561660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60874 (or 60872 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 8253561660 is about 90849.1148003105. The cubic root of 8253561660 is about 2020.9107467176.

The spelling of 8253561660 in words is "eight billion, two hundred fifty-three million, five hundred sixty-one thousand, six hundred sixty".