669383963 has 2 divisors, whose sum is σ = 669383964. Its totient is φ = 669383962.

The previous prime is 669383951. The next prime is 669383987. The reversal of 669383963 is 369383966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669383963 - 2⁸ = 669383707 is a prime.

It is not a weakly prime, because it can be changed into another prime (669383903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334691981 + 334691982.

It is an arithmetic number, because the mean of its divisors is an integer number (334691982).

Almost surely, 2^669383963 is an apocalyptic number.

669383963 is a deficient number, since it is larger than the sum of its proper divisors (1).

669383963 is an equidigital number, since it uses as much as digits as its factorization.

669383963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 53.

The square root of 669383963 is about 25872.4556816704. The cubic root of 669383963 is about 874.7657443109.

The spelling of 669383963 in words is "six hundred sixty-nine million, three hundred eighty-three thousand, nine hundred sixty-three".