669023304727 has 2 divisors, whose sum is σ = 669023304728. Its totient is φ = 669023304726.

The previous prime is 669023304721. The next prime is 669023304767. The reversal of 669023304727 is 727403320966.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669023304727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669023304721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334511652363 + 334511652364.

It is an arithmetic number, because the mean of its divisors is an integer number (334511652364).

Almost surely, 2^669023304727 is an apocalyptic number.

669023304727 is a deficient number, since it is larger than the sum of its proper divisors (1).

669023304727 is an equidigital number, since it uses as much as digits as its factorization.

669023304727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 669023304727 in words is "six hundred sixty-nine billion, twenty-three million, three hundred four thousand, seven hundred twenty-seven".