666700033807 has 16 divisors (see below), whose sum is σ = 697289662080. Its totient is φ = 636908160672.

The previous prime is 666700033801. The next prime is 666700033823. The reversal of 666700033807 is 708330007666.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666700033807 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 (666700033801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167193 + ... + 1166770.

It is an arithmetic number, because the mean of its divisors is an integer number (43580603880).

Almost surely, 2^666700033807 is an apocalyptic number.

666700033807 is a deficient number, since it is larger than the sum of its proper divisors (30589628273).

666700033807 is a wasteful number, since it uses less digits than its factorization.

666700033807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334262.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 666700033807 in words is "six hundred sixty-six billion, seven hundred million, thirty-three thousand, eight hundred seven".