6668070091 has 8 divisors (see below), whose sum is σ = 6690354080. Its totient is φ = 6645820608.

The previous prime is 6668070077. The next prime is 6668070109. The reversal of 6668070091 is 1900708666.

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 6668070091 - 2¹⁵ = 6668037323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668070061) 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, 412045 + ... + 427921.

It is an arithmetic number, because the mean of its divisors is an integer number (836294260).

Almost surely, 2^6668070091 is an apocalyptic number.

6668070091 is a deficient number, since it is larger than the sum of its proper divisors (22283989).

6668070091 is a wasteful number, since it uses less digits than its factorization.

6668070091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17253.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 6668070091 is about 81658.2518242951. The cubic root of 6668070091 is about 1882.2041157820.

The spelling of 6668070091 in words is "six billion, six hundred sixty-eight million, seventy thousand, ninety-one".