66560059 has 4 divisors (see below), whose sum is σ = 70063240. Its totient is φ = 63056880.

The previous prime is 66560041. The next prime is 66560071. The reversal of 66560059 is 95006566.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66560059 - 2⁹ = 66559547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66560009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751562 + ... + 1751599.

It is an arithmetic number, because the mean of its divisors is an integer number (17515810).

Almost surely, 2^66560059 is an apocalyptic number.

66560059 is a deficient number, since it is larger than the sum of its proper divisors (3503181).

66560059 is a wasteful number, since it uses less digits than its factorization.

66560059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503180.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 66560059 is about 8158.4348376389. The cubic root of 66560059 is about 405.2638812724.

The spelling of 66560059 in words is "sixty-six million, five hundred sixty thousand, fifty-nine".