10669991 has 2 divisors, whose sum is σ = 10669992. Its totient is φ = 10669990.

The previous prime is 10669979. The next prime is 10670003. The reversal of 10669991 is 19996601.

It is a balanced prime because it is at equal distance from previous prime (10669979) and next prime (10670003).

It is a cyclic number.

It is not a de Polignac number, because 10669991 - 2⁶ = 10669927 is a prime.

It is a super-2 number, since 2×10669991² = 227697415880162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10669961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5334995 + 5334996.

It is an arithmetic number, because the mean of its divisors is an integer number (5334996).

Almost surely, 2^10669991 is an apocalyptic number.

10669991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10669991 is an equidigital number, since it uses as much as digits as its factorization.

10669991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 10669991 is about 3266.4952165892. The cubic root of 10669991 is about 220.1513490236.

The spelling of 10669991 in words is "ten million, six hundred sixty-nine thousand, nine hundred ninety-one".