66427259 has 2 divisors, whose sum is σ = 66427260. Its totient is φ = 66427258.

The previous prime is 66427213. The next prime is 66427261. The reversal of 66427259 is 95272466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66427259 - 2¹² = 66423163 is a prime.

Together with 66427261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66427159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33213629 + 33213630.

It is an arithmetic number, because the mean of its divisors is an integer number (33213630).

Almost surely, 2^66427259 is an apocalyptic number.

66427259 is a deficient number, since it is larger than the sum of its proper divisors (1).

66427259 is an equidigital number, since it uses as much as digits as its factorization.

66427259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 66427259 is about 8150.2919579608. The cubic root of 66427259 is about 404.9941756008.

The spelling of 66427259 in words is "sixty-six million, four hundred twenty-seven thousand, two hundred fifty-nine".