538866660 has 24 divisors (see below), whose sum is σ = 1508826816. Its totient is φ = 143697760.

The previous prime is 538866637. The next prime is 538866667. The reversal of 538866660 is 66668835.

It is not an unprimeable number, because it can be changed into a prime (538866667) 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, 4490496 + ... + 4490615.

It is an arithmetic number, because the mean of its divisors is an integer number (62867784).

Almost surely, 2^538866660 is an apocalyptic number.

It is an amenable number.

538866660 is an abundant number, since it is smaller than the sum of its proper divisors (969960156).

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

538866660 is a wasteful number, since it uses less digits than its factorization.

538866660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981123 (or 8981121 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 538866660 is about 23213.5016746720. The cubic root of 538866660 is about 813.7551900207.

The spelling of 538866660 in words is "five hundred thirty-eight million, eight hundred sixty-six thousand, six hundred sixty".