66560626 has 16 divisors (see below), whose sum is σ = 112674240. Its totient is φ = 29211280.

The previous prime is 66560617. The next prime is 66560639. The reversal of 66560626 is 62606566.

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, 51526 + ... + 52801.

It is an arithmetic number, because the mean of its divisors is an integer number (7042140).

Almost surely, 2^66560626 is an apocalyptic number.

66560626 is a deficient number, since it is larger than the sum of its proper divisors (46113614).

66560626 is a wasteful number, since it uses less digits than its factorization.

66560626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104369.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 66560626 is about 8158.4695868772. The cubic root of 66560626 is about 405.2650320325.

The spelling of 66560626 in words is "sixty-six million, five hundred sixty thousand, six hundred twenty-six".