66505160 has 16 divisors (see below), whose sum is σ = 149636700. Its totient is φ = 26602048.

The previous prime is 66505147. The next prime is 66505177. The reversal of 66505160 is 6150566.

It can be written as a sum of positive squares in 2 ways, for example, as 65060356 + 1444804 = 8066^2 + 1202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831275 + ... + 831354.

Almost surely, 2^66505160 is an apocalyptic number.

It is an amenable number.

66505160 is an abundant number, since it is smaller than the sum of its proper divisors (83131540).

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

66505160 is a wasteful number, since it uses less digits than its factorization.

66505160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662640 (or 1662636 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 66505160 is about 8155.0695889122. The cubic root of 66505160 is about 405.1524295407.

The spelling of 66505160 in words is "sixty-six million, five hundred five thousand, one hundred sixty".