69666101 has 2 divisors, whose sum is σ = 69666102. Its totient is φ = 69666100.

The previous prime is 69666097. The next prime is 69666109. The reversal of 69666101 is 10166696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 3243601 = 8150^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 69666101 - 2² = 69666097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69666109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34833050 + 34833051.

It is an arithmetic number, because the mean of its divisors is an integer number (34833051).

Almost surely, 2^69666101 is an apocalyptic number.

It is an amenable number.

69666101 is a deficient number, since it is larger than the sum of its proper divisors (1).

69666101 is an equidigital number, since it uses as much as digits as its factorization.

69666101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 69666101 is about 8346.6221311378. The cubic root of 69666101 is about 411.4722029150.

The spelling of 69666101 in words is "sixty-nine million, six hundred sixty-six thousand, one hundred one".