10668191 has 4 divisors (see below), whose sum is σ = 10722000. Its totient is φ = 10614384.

The previous prime is 10668169. The next prime is 10668193. The reversal of 10668191 is 19186601.

10668191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19186601 = 7 ⋅2740943.

It is a cyclic number.

It is not a de Polignac number, because 10668191 - 2¹⁸ = 10406047 is a prime.

It is a super-2 number, since 2×10668191² = 227620598424962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10668193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26606 + ... + 27003.

It is an arithmetic number, because the mean of its divisors is an integer number (2680500).

Almost surely, 2^10668191 is an apocalyptic number.

10668191 is a deficient number, since it is larger than the sum of its proper divisors (53809).

10668191 is an equidigital number, since it uses as much as digits as its factorization.

10668191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53808.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 10668191 is about 3266.2196803032. The cubic root of 10668191 is about 220.1389686722.

The spelling of 10668191 in words is "ten million, six hundred sixty-eight thousand, one hundred ninety-one".