66358079 has 2 divisors, whose sum is σ = 66358080. Its totient is φ = 66358078.

The previous prime is 66358069. The next prime is 66358081. The reversal of 66358079 is 97085366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66358079 - 2⁴ = 66358063 is a prime.

Together with 66358081, 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 (66358069) 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, 33179039 + 33179040.

It is an arithmetic number, because the mean of its divisors is an integer number (33179040).

Almost surely, 2^66358079 is an apocalyptic number.

66358079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66358079 is an equidigital number, since it uses as much as digits as its factorization.

66358079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 66358079 is about 8146.0468326668. The cubic root of 66358079 is about 404.8535343977.

The spelling of 66358079 in words is "sixty-six million, three hundred fifty-eight thousand, seventy-nine".