66572160 has 64 divisors (see below), whose sum is σ = 212204880. Its totient is φ = 17752064.

The previous prime is 66572141. The next prime is 66572171. The reversal of 66572160 is 6127566.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 15417 + ... + 19256.

Almost surely, 2^66572160 is an apocalyptic number.

66572160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66572160 is an abundant number, since it is smaller than the sum of its proper divisors (145632720).

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

66572160 is a wasteful number, since it uses less digits than its factorization.

66572160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34695 (or 34683 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 66572160 is about 8159.1764290276. The cubic root of 66572160 is about 405.2884395492.

The spelling of 66572160 in words is "sixty-six million, five hundred seventy-two thousand, one hundred sixty".