66759101 has 2 divisors, whose sum is σ = 66759102. Its totient is φ = 66759100.

The previous prime is 66759083. The next prime is 66759107. The reversal of 66759101 is 10195766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66748900 + 10201 = 8170^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 66759101 - 2²² = 62564797 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 (66759107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33379550 + 33379551.

It is an arithmetic number, because the mean of its divisors is an integer number (33379551).

Almost surely, 2^66759101 is an apocalyptic number.

It is an amenable number.

66759101 is a deficient number, since it is larger than the sum of its proper divisors (1).

66759101 is an equidigital number, since it uses as much as digits as its factorization.

66759101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 66759101 is about 8170.6242723552. The cubic root of 66759101 is about 405.6674479221.

The spelling of 66759101 in words is "sixty-six million, seven hundred fifty-nine thousand, one hundred one".