66560042 has 16 divisors (see below), whose sum is σ = 101879232. Its totient is φ = 32607360.

The previous prime is 66560041. The next prime is 66560071. The reversal of 66560042 is 24006566.

It is a junction number, because it is equal to n+sod(n) for n = 66559987 and 66560014.

It is not an unprimeable number, because it can be changed into a prime (66560041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18317 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (6367452).

Almost surely, 2^66560042 is an apocalyptic number.

66560042 is a deficient number, since it is larger than the sum of its proper divisors (35319190).

66560042 is a wasteful number, since it uses less digits than its factorization.

66560042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66560042 is about 8158.4337957723. The cubic root of 66560042 is about 405.2638467698.

The spelling of 66560042 in words is "sixty-six million, five hundred sixty thousand, forty-two".