669459163 has 2 divisors, whose sum is σ = 669459164. Its totient is φ = 669459162.

The previous prime is 669459107. The next prime is 669459169. The reversal of 669459163 is 361954966.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669459163 is a prime.

It is not a weakly prime, because it can be changed into another prime (669459169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334729581 + 334729582.

It is an arithmetic number, because the mean of its divisors is an integer number (334729582).

Almost surely, 2^669459163 is an apocalyptic number.

669459163 is a deficient number, since it is larger than the sum of its proper divisors (1).

669459163 is an equidigital number, since it uses as much as digits as its factorization.

669459163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 669459163 is about 25873.9089238561. The cubic root of 669459163 is about 874.7985007578.

The spelling of 669459163 in words is "six hundred sixty-nine million, four hundred fifty-nine thousand, one hundred sixty-three".