6666973337 has 8 divisors (see below), whose sum is σ = 6794764680. Its totient is φ = 6540393600.

The previous prime is 6666973333. The next prime is 6666973349. The reversal of 6666973337 is 7333796666.

It can be written as a sum of positive squares in 4 ways, for example, as 3108731536 + 3558241801 = 55756^2 + 59651^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6666973337 - 2² = 6666973333 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666973333) 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, 291788 + ... + 313805.

It is an arithmetic number, because the mean of its divisors is an integer number (849345585).

Almost surely, 2^6666973337 is an apocalyptic number.

It is an amenable number.

6666973337 is a deficient number, since it is larger than the sum of its proper divisors (127791343).

6666973337 is a wasteful number, since it uses less digits than its factorization.

6666973337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605803.

The product of its digits is 15431472, while the sum is 56.

The square root of 6666973337 is about 81651.5360357660. The cubic root of 6666973337 is about 1882.1009161028.

The spelling of 6666973337 in words is "six billion, six hundred sixty-six million, nine hundred seventy-three thousand, three hundred thirty-seven".