669268667 has 2 divisors, whose sum is σ = 669268668. Its totient is φ = 669268666.

The previous prime is 669268661. The next prime is 669268679. The reversal of 669268667 is 766862966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669268667 - 2¹² = 669264571 is a prime.

It is not a weakly prime, because it can be changed into another prime (669268661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334634333 + 334634334.

It is an arithmetic number, because the mean of its divisors is an integer number (334634334).

Almost surely, 2^669268667 is an apocalyptic number.

669268667 is a deficient number, since it is larger than the sum of its proper divisors (1).

669268667 is an equidigital number, since it uses as much as digits as its factorization.

669268667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The square root of 669268667 is about 25870.2274245898. The cubic root of 669268667 is about 874.7155176408.

The spelling of 669268667 in words is "six hundred sixty-nine million, two hundred sixty-eight thousand, six hundred sixty-seven".