666383066 has 16 divisors (see below), whose sum is σ = 1006366464. Its totient is φ = 330933504.

The previous prime is 666383021. The next prime is 666383087. The reversal of 666383066 is 660383666.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364631 + ... + 366453.

It is an arithmetic number, because the mean of its divisors is an integer number (62897904).

Almost surely, 2^666383066 is an apocalyptic number.

666383066 is a deficient number, since it is larger than the sum of its proper divisors (339983398).

666383066 is a wasteful number, since it uses less digits than its factorization.

666383066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 559872, while the sum is 44.

The square root of 666383066 is about 25814.3964872317. The cubic root of 666383066 is about 873.4565731657.

The spelling of 666383066 in words is "six hundred sixty-six million, three hundred eighty-three thousand, sixty-six".