26881643 has 2 divisors, whose sum is σ = 26881644. Its totient is φ = 26881642.

The previous prime is 26881601. The next prime is 26881651. The reversal of 26881643 is 34618862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26881643 - 2¹⁸ = 26619499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26881597 and 26881606.

It is not a weakly prime, because it can be changed into another prime (26881693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13440821 + 13440822.

It is an arithmetic number, because the mean of its divisors is an integer number (13440822).

Almost surely, 2^26881643 is an apocalyptic number.

26881643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26881643 is an equidigital number, since it uses as much as digits as its factorization.

26881643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 26881643 is about 5184.7510065576. The cubic root of 26881643 is about 299.5609986468.

The spelling of 26881643 in words is "twenty-six million, eight hundred eighty-one thousand, six hundred forty-three".