669707 has 2 divisors, whose sum is σ = 669708. Its totient is φ = 669706.

The previous prime is 669701. The next prime is 669733. The reversal of 669707 is 707966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669707 - 2⁸ = 669451 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669707.

It is not a weakly prime, because it can be changed into another prime (669701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334853 + 334854.

It is an arithmetic number, because the mean of its divisors is an integer number (334854).

2⁶⁶⁹⁷⁰⁷ is an apocalyptic number.

669707 is a deficient number, since it is larger than the sum of its proper divisors (1).

669707 is an equidigital number, since it uses as much as digits as its factorization.

669707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 669707 is about 818.3562793796. The cubic root of 669707 is about 87.4906438976.

The spelling of 669707 in words is "six hundred sixty-nine thousand, seven hundred seven".