667380568 has 16 divisors (see below), whose sum is σ = 1270016280. Its totient is φ = 328709568.

The previous prime is 667380563. The next prime is 667380601. The reversal of 667380568 is 865083766.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667380563) 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 in 3 ways as a sum of consecutive naturals, for example, 622021 + ... + 623092.

Almost surely, 2^667380568 is an apocalyptic number.

It is an amenable number.

667380568 is a deficient number, since it is larger than the sum of its proper divisors (602635712).

667380568 is a wasteful number, since it uses less digits than its factorization.

667380568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245186 (or 1245182 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 667380568 is about 25833.7099155348. The cubic root of 667380568 is about 873.8921786256.

The spelling of 667380568 in words is "six hundred sixty-seven million, three hundred eighty thousand, five hundred sixty-eight".