666074716 has 12 divisors (see below), whose sum is σ = 1226979880. Its totient is φ = 315509040.

The previous prime is 666074611. The next prime is 666074719. The reversal of 666074716 is 617470666.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666074719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4381995 + ... + 4382146.

Almost surely, 2^666074716 is an apocalyptic number.

It is an amenable number.

666074716 is a deficient number, since it is larger than the sum of its proper divisors (560905164).

666074716 is a wasteful number, since it uses less digits than its factorization.

666074716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8764164 (or 8764162 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 666074716 is about 25808.4233536262. The cubic root of 666074716 is about 873.3218299024.

The spelling of 666074716 in words is "six hundred sixty-six million, seventy-four thousand, seven hundred sixteen".