666049933 has 8 divisors (see below), whose sum is σ = 670519808. Its totient is φ = 661593744.

The previous prime is 666049897. The next prime is 666049949. The reversal of 666049933 is 339940666.

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 666049933 - 2¹³ = 666041741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666049733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105535 + ... + 111667.

It is an arithmetic number, because the mean of its divisors is an integer number (83814976).

Almost surely, 2^666049933 is an apocalyptic number.

It is an amenable number.

666049933 is a deficient number, since it is larger than the sum of its proper divisors (4469875).

666049933 is a wasteful number, since it uses less digits than its factorization.

666049933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843.

The product of its (nonzero) digits is 629856, while the sum is 46.

The square root of 666049933 is about 25807.9432152196. The cubic root of 666049933 is about 873.3109983831.

The spelling of 666049933 in words is "six hundred sixty-six million, forty-nine thousand, nine hundred thirty-three".