66560652 has 18 divisors (see below), whose sum is σ = 168250628. Its totient is φ = 22186872.

The previous prime is 66560647. The next prime is 66560653. The reversal of 66560652 is 25606566.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1848907 = 66560652 / (6 + 6 + 5 + 6 + 0 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (66560653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 924418 + ... + 924489.

Almost surely, 2^66560652 is an apocalyptic number.

It is an amenable number.

66560652 is an abundant number, since it is smaller than the sum of its proper divisors (101689976).

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

66560652 is a wasteful number, since it uses less digits than its factorization.

66560652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848917 (or 1848912 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 66560652 is about 8158.4711803131. The cubic root of 66560652 is about 405.2650848009.

The spelling of 66560652 in words is "sixty-six million, five hundred sixty thousand, six hundred fifty-two".