669027101 has 2 divisors, whose sum is σ = 669027102. Its totient is φ = 669027100.

The previous prime is 669026989. The next prime is 669027103. The reversal of 669027101 is 101720966.

It is a happy number.

669027101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653824900 + 15202201 = 25570^2 + 3899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669027101 is a prime.

Together with 669027103, 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 (669027103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334513550 + 334513551.

It is an arithmetic number, because the mean of its divisors is an integer number (334513551).

Almost surely, 2^669027101 is an apocalyptic number.

It is an amenable number.

669027101 is a deficient number, since it is larger than the sum of its proper divisors (1).

669027101 is an equidigital number, since it uses as much as digits as its factorization.

669027101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 669027101 is about 25865.5582000466. The cubic root of 669027101 is about 874.6102649639.

The spelling of 669027101 in words is "six hundred sixty-nine million, twenty-seven thousand, one hundred one".