669470131 has 18 divisors (see below), whose sum is σ = 769322540. Its totient is φ = 582092280.

The previous prime is 669470077. The next prime is 669470143. The reversal of 669470131 is 131074966.

It is not a de Polignac number, because 669470131 - 2¹¹ = 669468083 is a prime.

It is a super-2 number, since 2×669470131² = 896380512602314322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669470161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 58780 + ... + 69238.

Almost surely, 2^669470131 is an apocalyptic number.

669470131 is a deficient number, since it is larger than the sum of its proper divisors (99852409).

669470131 is a wasteful number, since it uses less digits than its factorization.

669470131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10527 (or 10493 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 669470131 is about 25874.1208739543. The cubic root of 669470131 is about 874.8032781155.

The spelling of 669470131 in words is "six hundred sixty-nine million, four hundred seventy thousand, one hundred thirty-one".