667426168 has 8 divisors (see below), whose sum is σ = 1251424080. Its totient is φ = 333713080.

The previous prime is 667426159. The next prime is 667426169. The reversal of 667426168 is 861624766.

667426168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667426169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41714128 + ... + 41714143.

It is an arithmetic number, because the mean of its divisors is an integer number (156428010).

Almost surely, 2^667426168 is an apocalyptic number.

It is an amenable number.

667426168 is a deficient number, since it is larger than the sum of its proper divisors (583997912).

667426168 is a wasteful number, since it uses less digits than its factorization.

667426168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83428277 (or 83428273 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 667426168 is about 25834.5924682392. The cubic root of 667426168 is about 873.9120816003.

The spelling of 667426168 in words is "six hundred sixty-seven million, four hundred twenty-six thousand, one hundred sixty-eight".