666883 has 8 divisors (see below), whose sum is σ = 778752. Its totient is φ = 559176.

The previous prime is 666871. The next prime is 666889. The reversal of 666883 is 388666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666883 - 2¹⁷ = 535811 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666889) 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, 685 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (97344).

2⁶⁶⁶⁸⁸³ is an apocalyptic number.

666883 is a deficient number, since it is larger than the sum of its proper divisors (111869).

666883 is a wasteful number, since it uses less digits than its factorization.

666883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081.

The product of its digits is 41472, while the sum is 37.

The square root of 666883 is about 816.6290467526. The cubic root of 666883 is about 87.3674946804.

The spelling of 666883 in words is "six hundred sixty-six thousand, eight hundred eighty-three".