667322289 has 12 divisors (see below), whose sum is σ = 986327056. Its totient is φ = 434535192.

The previous prime is 667322287. The next prime is 667322297. The reversal of 667322289 is 982223766.

It is not a de Polignac number, because 667322289 - 2¹ = 667322287 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667322281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861787 + ... + 862560.

Almost surely, 2^667322289 is an apocalyptic number.

It is an amenable number.

667322289 is a deficient number, since it is larger than the sum of its proper divisors (319004767).

667322289 is a wasteful number, since it uses less digits than its factorization.

667322289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724396 (or 1724393 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 667322289 is about 25832.5819267064. The cubic root of 667322289 is about 873.8667403438.

The spelling of 667322289 in words is "six hundred sixty-seven million, three hundred twenty-two thousand, two hundred eighty-nine".