666374283 has 24 divisors (see below), whose sum is σ = 999398400. Its totient is φ = 443712168.

The previous prime is 666374273. The next prime is 666374287. The reversal of 666374283 is 382473666.

It is not a de Polignac number, because 666374283 - 2²⁰ = 665325707 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (666374287) 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 23 ways as a sum of consecutive naturals, for example, 377958 + ... + 379716.

It is an arithmetic number, because the mean of its divisors is an integer number (41641600).

Almost surely, 2^666374283 is an apocalyptic number.

666374283 is a deficient number, since it is larger than the sum of its proper divisors (333024117).

666374283 is a wasteful number, since it uses less digits than its factorization.

666374283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333 (or 3321 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 666374283 is about 25814.2263684194. The cubic root of 666374283 is about 873.4527357318.

The spelling of 666374283 in words is "six hundred sixty-six million, three hundred seventy-four thousand, two hundred eighty-three".