66520160 has 48 divisors (see below), whose sum is σ = 179607456. Its totient is φ = 22806528.

The previous prime is 66520151. The next prime is 66520177. The reversal of 66520160 is 6102566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28577 + ... + 30816.

It is an arithmetic number, because the mean of its divisors is an integer number (3741822).

Almost surely, 2^66520160 is an apocalyptic number.

It is an amenable number.

66520160 is an abundant number, since it is smaller than the sum of its proper divisors (113087296).

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

66520160 is a wasteful number, since it uses less digits than its factorization.

66520160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59415 (or 59407 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66520160 is about 8155.9892103901. The cubic root of 66520160 is about 405.1828874760.

The spelling of 66520160 in words is "sixty-six million, five hundred twenty thousand, one hundred sixty".