669701 has 2 divisors, whose sum is σ = 669702. Its totient is φ = 669700.

The previous prime is 669689. The next prime is 669707. The reversal of 669701 is 107966.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 5476 = 815^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 669701 - 2⁶ = 669637 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669701.

It is not a weakly prime, because it can be changed into another prime (669707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334850 + 334851.

It is an arithmetic number, because the mean of its divisors is an integer number (334851).

2⁶⁶⁹⁷⁰¹ is an apocalyptic number.

It is an amenable number.

669701 is a deficient number, since it is larger than the sum of its proper divisors (1).

669701 is an equidigital number, since it uses as much as digits as its factorization.

669701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 669701 is about 818.3526134864. The cubic root of 669701 is about 87.4903826164.

The spelling of 669701 in words is "six hundred sixty-nine thousand, seven hundred one".