669192907 has 2 divisors, whose sum is σ = 669192908. Its totient is φ = 669192906.

The previous prime is 669192899. The next prime is 669192911. The reversal of 669192907 is 709291966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669192907 - 2³ = 669192899 is a prime.

It is a super-2 number, since 2×669192907² = 895638293558221298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (669192917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334596453 + 334596454.

It is an arithmetic number, because the mean of its divisors is an integer number (334596454).

Almost surely, 2^669192907 is an apocalyptic number.

669192907 is a deficient number, since it is larger than the sum of its proper divisors (1).

669192907 is an equidigital number, since it uses as much as digits as its factorization.

669192907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 669192907 is about 25868.7631517241. The cubic root of 669192907 is about 874.6825109916.

The spelling of 669192907 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, nine hundred seven".