669141023 has 2 divisors, whose sum is σ = 669141024. Its totient is φ = 669141022.

The previous prime is 669141019. The next prime is 669141037. The reversal of 669141023 is 320141966.

669141023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669141023 - 2² = 669141019 is a prime.

It is a super-2 number, since 2×669141023² = 895499417322973058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669141043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334570511 + 334570512.

It is an arithmetic number, because the mean of its divisors is an integer number (334570512).

Almost surely, 2^669141023 is an apocalyptic number.

669141023 is a deficient number, since it is larger than the sum of its proper divisors (1).

669141023 is an equidigital number, since it uses as much as digits as its factorization.

669141023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 669141023 is about 25867.7603011935. The cubic root of 669141023 is about 874.6599050535.

Adding to 669141023 its reverse (320141966), we get a palindrome (989282989).

The spelling of 669141023 in words is "six hundred sixty-nine million, one hundred forty-one thousand, twenty-three".