66545159 has 2 divisors, whose sum is σ = 66545160. Its totient is φ = 66545158.

The previous prime is 66545099. The next prime is 66545177. The reversal of 66545159 is 95154566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66545159 - 2²⁴ = 49767943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66545959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33272579 + 33272580.

It is an arithmetic number, because the mean of its divisors is an integer number (33272580).

Almost surely, 2^66545159 is an apocalyptic number.

66545159 is a deficient number, since it is larger than the sum of its proper divisors (1).

66545159 is an equidigital number, since it uses as much as digits as its factorization.

66545159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 41.

The square root of 66545159 is about 8157.5216211788. The cubic root of 66545159 is about 405.2336384984.

The spelling of 66545159 in words is "sixty-six million, five hundred forty-five thousand, one hundred fifty-nine".