66233117 has 2 divisors, whose sum is σ = 66233118. Its totient is φ = 66233116.

The previous prime is 66233113. The next prime is 66233159. The reversal of 66233117 is 71133266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62188996 + 4044121 = 7886^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 66233117 - 2² = 66233113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66233117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66233113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33116558 + 33116559.

It is an arithmetic number, because the mean of its divisors is an integer number (33116559).

Almost surely, 2^66233117 is an apocalyptic number.

It is an amenable number.

66233117 is a deficient number, since it is larger than the sum of its proper divisors (1).

66233117 is an equidigital number, since it uses as much as digits as its factorization.

66233117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 66233117 is about 8138.3731175217. The cubic root of 66233117 is about 404.5992418366.

The spelling of 66233117 in words is "sixty-six million, two hundred thirty-three thousand, one hundred seventeen".