10668641 has 2 divisors, whose sum is σ = 10668642. Its totient is φ = 10668640.

The previous prime is 10668631. The next prime is 10668643. The reversal of 10668641 is 14686601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7134241 + 3534400 = 2671^2 + 1880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10668641 is a prime.

It is a super-2 number, since 2×10668641² = 227639801573762, which contains 22 as substring.

Together with 10668643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10668598 and 10668607.

It is not a weakly prime, because it can be changed into another prime (10668643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5334320 + 5334321.

It is an arithmetic number, because the mean of its divisors is an integer number (5334321).

Almost surely, 2^10668641 is an apocalyptic number.

It is an amenable number.

10668641 is a deficient number, since it is larger than the sum of its proper divisors (1).

10668641 is an equidigital number, since it uses as much as digits as its factorization.

10668641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 10668641 is about 3266.2885665538. The cubic root of 10668641 is about 220.1420638906.

The spelling of 10668641 in words is "ten million, six hundred sixty-eight thousand, six hundred forty-one".