6666700407 has 8 divisors (see below), whose sum is σ = 8890571760. Its totient is φ = 4443648000.

The previous prime is 6666700387. The next prime is 6666700429. The reversal of 6666700407 is 7040076666.

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

It is not a de Polignac number, because 6666700407 - 2⁶ = 6666700343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666700307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185482 + ... + 218487.

It is an arithmetic number, because the mean of its divisors is an integer number (1111321470).

Almost surely, 2^6666700407 is an apocalyptic number.

6666700407 is a deficient number, since it is larger than the sum of its proper divisors (2223871353).

6666700407 is a wasteful number, since it uses less digits than its factorization.

6666700407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409473.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 6666700407 is about 81649.8647090122. The cubic root of 6666700407 is about 1882.0752328436.

The spelling of 6666700407 in words is "six billion, six hundred sixty-six million, seven hundred thousand, four hundred seven".