6668194 has 8 divisors (see below), whose sum is σ = 10771740. Its totient is φ = 3077616.

The previous prime is 6668171. The next prime is 6668203. The reversal of 6668194 is 4918666.

It can be written as a sum of positive squares in 2 ways, for example, as 6568969 + 99225 = 2563^2 + 315^2 .

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

It is a super-2 number, since 2×6668194² = 88929622443272, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128209 + ... + 128260.

Almost surely, 2^6668194 is an apocalyptic number.

6668194 is a deficient number, since it is larger than the sum of its proper divisors (4103546).

6668194 is a wasteful number, since it uses less digits than its factorization.

6668194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256484.

The product of its digits is 62208, while the sum is 40.

The square root of 6668194 is about 2582.2846473617. The cubic root of 6668194 is about 188.2215774357.

The spelling of 6668194 in words is "six million, six hundred sixty-eight thousand, one hundred ninety-four".