66326879 has 2 divisors, whose sum is σ = 66326880. Its totient is φ = 66326878.

The previous prime is 66326863. The next prime is 66326921. The reversal of 66326879 is 97862366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66326879 - 2⁴ = 66326863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66326849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33163439 + 33163440.

It is an arithmetic number, because the mean of its divisors is an integer number (33163440).

Almost surely, 2^66326879 is an apocalyptic number.

66326879 is a deficient number, since it is larger than the sum of its proper divisors (1).

66326879 is an equidigital number, since it uses as much as digits as its factorization.

66326879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 66326879 is about 8144.1315681907. The cubic root of 66326879 is about 404.7900735971.

The spelling of 66326879 in words is "sixty-six million, three hundred twenty-six thousand, eight hundred seventy-nine".