6667000668 has 36 divisors (see below), whose sum is σ = 17739681960. Its totient is φ = 2105368416.

The previous prime is 6667000667. The next prime is 6667000699. The reversal of 6667000668 is 8660007666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6667000668² = 88897795814224892448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667000663) 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 11 ways as a sum of consecutive naturals, for example, 4872855 + ... + 4874222.

Almost surely, 2^6667000668 is an apocalyptic number.

It is an amenable number.

6667000668 is an abundant number, since it is smaller than the sum of its proper divisors (11072681292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6667000668 is a wasteful number, since it uses less digits than its factorization.

6667000668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747106 (or 9747101 counting only the distinct ones).

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

The square root of 6667000668 is about 81651.7033992555. The cubic root of 6667000668 is about 1882.1034879660.

The spelling of 6667000668 in words is "six billion, six hundred sixty-seven million, six hundred sixty-eight", and thus it is an aban number.