666648333 has 32 divisors (see below), whose sum is σ = 1065617280. Its totient is φ = 409466880.

The previous prime is 666648331. The next prime is 666648349. The reversal of 666648333 is 333846666.

It is not a de Polignac number, because 666648333 - 2¹ = 666648331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666648331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223510 + ... + 226472.

It is an arithmetic number, because the mean of its divisors is an integer number (33300540).

Almost surely, 2^666648333 is an apocalyptic number.

It is an amenable number.

666648333 is a deficient number, since it is larger than the sum of its proper divisors (398968947).

666648333 is a wasteful number, since it uses less digits than its factorization.

666648333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3620 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The square root of 666648333 is about 25819.5339423468. The cubic root of 666648333 is about 873.5724566964.

The spelling of 666648333 in words is "six hundred sixty-six million, six hundred forty-eight thousand, three hundred thirty-three".