10640191 has 8 divisors (see below), whose sum is σ = 11151360. Its totient is φ = 10133112.

The previous prime is 10640173. The next prime is 10640207. The reversal of 10640191 is 19104601.

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 10640191 - 2⁵ = 10640159 is a prime.

It is a super-2 number, since 2×10640191² = 226427329032962, 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 (10640491) 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, 5170 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (1393920).

Almost surely, 2^10640191 is an apocalyptic number.

10640191 is a deficient number, since it is larger than the sum of its proper divisors (511169).

10640191 is a wasteful number, since it uses less digits than its factorization.

10640191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 10640191 is about 3261.9305633321. The cubic root of 10640191 is about 219.9462058557.

Adding to 10640191 its reverse (19104601), we get a palindrome (29744792).

The spelling of 10640191 in words is "ten million, six hundred forty thousand, one hundred ninety-one".