6668491101 has 8 divisors (see below), whose sum is σ = 9197918880. Its totient is φ = 4292362032.

The previous prime is 6668491097. The next prime is 6668491133. The reversal of 6668491101 is 1011948666.

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

It is not a de Polignac number, because 6668491101 - 2² = 6668491097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668491001) 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, 38324575 + ... + 38324748.

It is an arithmetic number, because the mean of its divisors is an integer number (1149739860).

Almost surely, 2^6668491101 is an apocalyptic number.

It is an amenable number.

6668491101 is a deficient number, since it is larger than the sum of its proper divisors (2529427779).

6668491101 is a wasteful number, since it uses less digits than its factorization.

6668491101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76649355.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 6668491101 is about 81660.8296614723. The cubic root of 6668491101 is about 1882.2437279470.

The spelling of 6668491101 in words is "six billion, six hundred sixty-eight million, four hundred ninety-one thousand, one hundred one".