66300079 has 2 divisors, whose sum is σ = 66300080. Its totient is φ = 66300078.

The previous prime is 66300071. The next prime is 66300131. The reversal of 66300079 is 97000366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66300079 - 2³ = 66300071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66300079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66300071) 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, 33150039 + 33150040.

It is an arithmetic number, because the mean of its divisors is an integer number (33150040).

Almost surely, 2^66300079 is an apocalyptic number.

66300079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66300079 is an equidigital number, since it uses as much as digits as its factorization.

66300079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 66300079 is about 8142.4860454286. The cubic root of 66300079 is about 404.7355465055.

The spelling of 66300079 in words is "sixty-six million, three hundred thousand, seventy-nine".