5601666660 has 48 divisors (see below), whose sum is σ = 15698079936. Its totient is φ = 1492500352.

The previous prime is 5601666649. The next prime is 5601666683. The reversal of 5601666660 is 666661065.

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, 31894 + ... + 110546.

It is an arithmetic number, because the mean of its divisors is an integer number (327043332).

Almost surely, 2^5601666660 is an apocalyptic number.

It is an amenable number.

5601666660 is an abundant number, since it is smaller than the sum of its proper divisors (10096413276).

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

5601666660 is a wasteful number, since it uses less digits than its factorization.

5601666660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79852 (or 79850 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 5601666660 is about 74844.2827475820. The cubic root of 5601666660 is about 1775.9841567351.

The spelling of 5601666660 in words is "five billion, six hundred one million, six hundred sixty-six thousand, six hundred sixty".