66079157 has 2 divisors, whose sum is σ = 66079158. Its totient is φ = 66079156.

The previous prime is 66079141. The next prime is 66079159. The reversal of 66079157 is 75197066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46771921 + 19307236 = 6839^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 66079157 - 2⁴ = 66079141 is a prime.

Together with 66079159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66079159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33039578 + 33039579.

It is an arithmetic number, because the mean of its divisors is an integer number (33039579).

Almost surely, 2^66079157 is an apocalyptic number.

It is an amenable number.

66079157 is a deficient number, since it is larger than the sum of its proper divisors (1).

66079157 is an equidigital number, since it uses as much as digits as its factorization.

66079157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 66079157 is about 8128.9087213475. The cubic root of 66079157 is about 404.2854993521.

The spelling of 66079157 in words is "sixty-six million, seventy-nine thousand, one hundred fifty-seven".