66794267 has 2 divisors, whose sum is σ = 66794268. Its totient is φ = 66794266.

The previous prime is 66794251. The next prime is 66794269. The reversal of 66794267 is 76249766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66794267 - 2⁴ = 66794251 is a prime.

It is a super-2 number, since 2×66794267² = 8922948208134578, which contains 22 as substring.

Together with 66794269, 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 (66794269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33397133 + 33397134.

It is an arithmetic number, because the mean of its divisors is an integer number (33397134).

Almost surely, 2^66794267 is an apocalyptic number.

66794267 is a deficient number, since it is larger than the sum of its proper divisors (1).

66794267 is an equidigital number, since it uses as much as digits as its factorization.

66794267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 66794267 is about 8172.7759665856. The cubic root of 66794267 is about 405.7386651651.

The spelling of 66794267 in words is "sixty-six million, seven hundred ninety-four thousand, two hundred sixty-seven".