666733008 has 40 divisors (see below), whose sum is σ = 1739128768. Its totient is φ = 220084992.

The previous prime is 666733003. The next prime is 666733031. The reversal of 666733008 is 800337666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666733003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62485 + ... + 72372.

Almost surely, 2^666733008 is an apocalyptic number.

It is an amenable number.

666733008 is an abundant number, since it is smaller than the sum of its proper divisors (1072395760).

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

666733008 is a wasteful number, since it uses less digits than its factorization.

666733008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134971 (or 134965 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 666733008 is about 25821.1736371529. The cubic root of 666733008 is about 873.6094410216.

The spelling of 666733008 in words is "six hundred sixty-six million, seven hundred thirty-three thousand, eight".