666010008 has 24 divisors (see below), whose sum is σ = 1803777300. Its totient is φ = 222003312.

The previous prime is 666010001. The next prime is 666010043. The reversal of 666010008 is 800010666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666010001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4624998 + ... + 4625141.

Almost surely, 2^666010008 is an apocalyptic number.

It is an amenable number.

666010008 is an abundant number, since it is smaller than the sum of its proper divisors (1137767292).

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

666010008 is a wasteful number, since it uses less digits than its factorization.

666010008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250151 (or 9250144 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 666010008 is about 25807.1697014609. The cubic root of 666010008 is about 873.2935484210.

The spelling of 666010008 in words is "six hundred sixty-six million, ten thousand, eight".