520267660 has 48 divisors (see below), whose sum is σ = 1262005920. Its totient is φ = 178058240.

The previous prime is 520267639. The next prime is 520267669. The reversal of 520267660 is 66762025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (520267669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65815 + ... + 73294.

It is an arithmetic number, because the mean of its divisors is an integer number (26291790).

Almost surely, 2^520267660 is an apocalyptic number.

It is an amenable number.

520267660 is an abundant number, since it is smaller than the sum of its proper divisors (741738260).

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

520267660 is a wasteful number, since it uses less digits than its factorization.

520267660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139146 (or 139144 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 520267660 is about 22809.3765806959. The cubic root of 520267660 is about 804.2831008025.

The spelling of 520267660 in words is "five hundred twenty million, two hundred sixty-seven thousand, six hundred sixty".