10691789 has 2 divisors, whose sum is σ = 10691790. Its totient is φ = 10691788.

The previous prime is 10691777. The next prime is 10691797. The reversal of 10691789 is 98719601.

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., 5593225 + 5098564 = 2365^2 + 2258^2 .

It is a cyclic number.

It is not a de Polignac number, because 10691789 - 2⁴ = 10691773 is a prime.

It is a super-2 number, since 2×10691789² = 228628704041042, 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 (10691719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345894 + 5345895.

It is an arithmetic number, because the mean of its divisors is an integer number (5345895).

Almost surely, 2^10691789 is an apocalyptic number.

It is an amenable number.

10691789 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691789 is an equidigital number, since it uses as much as digits as its factorization.

10691789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 10691789 is about 3269.8301179113. The cubic root of 10691789 is about 220.3011646734.

The spelling of 10691789 in words is "ten million, six hundred ninety-one thousand, seven hundred eighty-nine".