669081163 has 4 divisors (see below), whose sum is σ = 669173400. Its totient is φ = 668988928.

The previous prime is 669081139. The next prime is 669081187. The reversal of 669081163 is 361180966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361180966 = 2 ⋅180590483.

It is an interprime number because it is at equal distance from previous prime (669081139) and next prime (669081187).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669081163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669081103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34213 + ... + 50086.

It is an arithmetic number, because the mean of its divisors is an integer number (167293350).

Almost surely, 2^669081163 is an apocalyptic number.

669081163 is a deficient number, since it is larger than the sum of its proper divisors (92237).

669081163 is an equidigital number, since it uses as much as digits as its factorization.

669081163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92236.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 669081163 is about 25866.6032366061. The cubic root of 669081163 is about 874.6338225082.

The spelling of 669081163 in words is "six hundred sixty-nine million, eighty-one thousand, one hundred sixty-three".