66074117 has 2 divisors, whose sum is σ = 66074118. Its totient is φ = 66074116.

The previous prime is 66074089. The next prime is 66074123. The reversal of 66074117 is 71147066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62710561 + 3363556 = 7919^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 66074117 - 2¹⁰ = 66073093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66074167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33037058 + 33037059.

It is an arithmetic number, because the mean of its divisors is an integer number (33037059).

Almost surely, 2^66074117 is an apocalyptic number.

It is an amenable number.

66074117 is a deficient number, since it is larger than the sum of its proper divisors (1).

66074117 is an equidigital number, since it uses as much as digits as its factorization.

66074117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 66074117 is about 8128.5987107250. The cubic root of 66074117 is about 404.2752205147.

The spelling of 66074117 in words is "sixty-six million, seventy-four thousand, one hundred seventeen".