667426159 has 2 divisors, whose sum is σ = 667426160. Its totient is φ = 667426158.

The previous prime is 667426147. The next prime is 667426169. The reversal of 667426159 is 951624766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667426159 - 2⁷ = 667426031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667426169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333713079 + 333713080.

It is an arithmetic number, because the mean of its divisors is an integer number (333713080).

Almost surely, 2^667426159 is an apocalyptic number.

667426159 is a deficient number, since it is larger than the sum of its proper divisors (1).

667426159 is an equidigital number, since it uses as much as digits as its factorization.

667426159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 667426159 is about 25834.5922940541. The cubic root of 667426159 is about 873.9120776722.

The spelling of 667426159 in words is "six hundred sixty-seven million, four hundred twenty-six thousand, one hundred fifty-nine".