669126323 has 2 divisors, whose sum is σ = 669126324. Its totient is φ = 669126322.

The previous prime is 669126317. The next prime is 669126377. The reversal of 669126323 is 323621966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669126323 - 2¹⁶ = 669060787 is a prime.

It is a super-2 number, since 2×669126323² = 895460072263000658, which contains 22 as substring.

It is equal to p_34735385 and since 669126323 and 34735385 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (669126383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334563161 + 334563162.

It is an arithmetic number, because the mean of its divisors is an integer number (334563162).

Almost surely, 2^669126323 is an apocalyptic number.

669126323 is a deficient number, since it is larger than the sum of its proper divisors (1).

669126323 is an equidigital number, since it uses as much as digits as its factorization.

669126323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 669126323 is about 25867.4761621616. The cubic root of 669126323 is about 874.6535000286.

The spelling of 669126323 in words is "six hundred sixty-nine million, one hundred twenty-six thousand, three hundred twenty-three".