66562265 has 32 divisors (see below), whose sum is σ = 100832256. Its totient is φ = 40973760.

The previous prime is 66562261. The next prime is 66562277. The reversal of 66562265 is 56226566.

It is not a de Polignac number, because 66562265 - 2² = 66562261 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66562261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30914 + ... + 32996.

It is an arithmetic number, because the mean of its divisors is an integer number (3151008).

Almost surely, 2^66562265 is an apocalyptic number.

It is an amenable number.

66562265 is a deficient number, since it is larger than the sum of its proper divisors (34269991).

66562265 is a wasteful number, since it uses less digits than its factorization.

66562265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its digits is 129600, while the sum is 38.

The square root of 66562265 is about 8158.5700340194. The cubic root of 66562265 is about 405.2683584432.

The spelling of 66562265 in words is "sixty-six million, five hundred sixty-two thousand, two hundred sixty-five".