520116666 has 32 divisors (see below), whose sum is σ = 1122216768. Its totient is φ = 160093440.

The previous prime is 520116643. The next prime is 520116721. The reversal of 520116666 is 666611025.

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, 42700 + ... + 53511.

It is an arithmetic number, because the mean of its divisors is an integer number (35069274).

Almost surely, 2^520116666 is an apocalyptic number.

520116666 is an abundant number, since it is smaller than the sum of its proper divisors (602100102).

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

520116666 is a wasteful number, since it uses less digits than its factorization.

520116666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96286.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 520116666 is about 22806.0664297901. The cubic root of 520116666 is about 804.2052859377.

The spelling of 520116666 in words is "five hundred twenty million, one hundred sixteen thousand, six hundred sixty-six".