26845691 has 2 divisors, whose sum is σ = 26845692. Its totient is φ = 26845690.

The previous prime is 26845681. The next prime is 26845711. The reversal of 26845691 is 19654862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26845691 - 2¹⁴ = 26829307 is a prime.

It is a super-2 number, since 2×26845691² = 1441382250534962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26845681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13422845 + 13422846.

It is an arithmetic number, because the mean of its divisors is an integer number (13422846).

Almost surely, 2^26845691 is an apocalyptic number.

26845691 is a deficient number, since it is larger than the sum of its proper divisors (1).

26845691 is an equidigital number, since it uses as much as digits as its factorization.

26845691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 26845691 is about 5181.2827562294. The cubic root of 26845691 is about 299.4273929511.

The spelling of 26845691 in words is "twenty-six million, eight hundred forty-five thousand, six hundred ninety-one".