66413159 has 2 divisors, whose sum is σ = 66413160. Its totient is φ = 66413158.

The previous prime is 66413131. The next prime is 66413287. The reversal of 66413159 is 95131466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66413159 - 2²⁰ = 65364583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66413359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33206579 + 33206580.

It is an arithmetic number, because the mean of its divisors is an integer number (33206580).

Almost surely, 2^66413159 is an apocalyptic number.

66413159 is a deficient number, since it is larger than the sum of its proper divisors (1).

66413159 is an equidigital number, since it uses as much as digits as its factorization.

66413159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 66413159 is about 8149.4269123663. The cubic root of 66413159 is about 404.9655185804.

The spelling of 66413159 in words is "sixty-six million, four hundred thirteen thousand, one hundred fifty-nine".