669359 has 2 divisors, whose sum is σ = 669360. Its totient is φ = 669358.

The previous prime is 669329. The next prime is 669371. The reversal of 669359 is 953966.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334679 + 334680.

It is an arithmetic number, because the mean of its divisors is an integer number (334680).

2⁶⁶⁹³⁵⁹ is an apocalyptic number.

669359 is a deficient number, since it is larger than the sum of its proper divisors (1).

669359 is an equidigital number, since it uses as much as digits as its factorization.

669359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 38.

The square root of 669359 is about 818.1436304219. The cubic root of 669359 is about 87.4754870109.

The spelling of 669359 in words is "six hundred sixty-nine thousand, three hundred fifty-nine".