66626065 has 32 divisors (see below), whose sum is σ = 92851200. Its totient is φ = 45385920.

The previous prime is 66626059. The next prime is 66626069. The reversal of 66626065 is 56062666.

It is not a de Polignac number, because 66626065 - 2¹⁷ = 66494993 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66626069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107326 + ... + 107944.

It is an arithmetic number, because the mean of its divisors is an integer number (2901600).

Almost surely, 2^66626065 is an apocalyptic number.

It is an amenable number.

66626065 is a deficient number, since it is larger than the sum of its proper divisors (26225135).

66626065 is a wasteful number, since it uses less digits than its factorization.

66626065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

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

The square root of 66626065 is about 8162.4790964510. The cubic root of 66626065 is about 405.3978004758.

The spelling of 66626065 in words is "sixty-six million, six hundred twenty-six thousand, sixty-five".