666457033 has 16 divisors (see below), whose sum is σ = 766324800. Its totient is φ = 573926080.

The previous prime is 666457013. The next prime is 666457037. The reversal of 666457033 is 330754666.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666457033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666457037) 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 15 ways as a sum of consecutive naturals, for example, 2803 + ... + 36616.

It is an arithmetic number, because the mean of its divisors is an integer number (47895300).

Almost surely, 2^666457033 is an apocalyptic number.

It is an amenable number.

666457033 is a deficient number, since it is larger than the sum of its proper divisors (99867767).

666457033 is a wasteful number, since it uses less digits than its factorization.

666457033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39512.

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 666457033 is about 25815.8291170359. The cubic root of 666457033 is about 873.4888891990.

The spelling of 666457033 in words is "six hundred sixty-six million, four hundred fifty-seven thousand, thirty-three".