666655033 has 8 divisors (see below), whose sum is σ = 765537120. Its totient is φ = 574152480.

The previous prime is 666655013. The next prime is 666655057. The reversal of 666655033 is 330556666.

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

It is not a de Polignac number, because 666655033 - 2⁵ = 666655001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666655013) 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, 1594660 + ... + 1595077.

It is an arithmetic number, because the mean of its divisors is an integer number (95692140).

Almost surely, 2^666655033 is an apocalyptic number.

It is an amenable number.

666655033 is a deficient number, since it is larger than the sum of its proper divisors (98882087).

666655033 is a wasteful number, since it uses less digits than its factorization.

666655033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189767.

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 666655033 is about 25819.6636887470. The cubic root of 666655033 is about 873.5753832348.

The spelling of 666655033 in words is "six hundred sixty-six million, six hundred fifty-five thousand, thirty-three".