26743991 has 2 divisors, whose sum is σ = 26743992. Its totient is φ = 26743990.

The previous prime is 26743961. The next prime is 26744021. The reversal of 26743991 is 19934762.

It is a balanced prime because it is at equal distance from previous prime (26743961) and next prime (26744021).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26743991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26743961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13371995 + 13371996.

It is an arithmetic number, because the mean of its divisors is an integer number (13371996).

Almost surely, 2^26743991 is an apocalyptic number.

26743991 is a deficient number, since it is larger than the sum of its proper divisors (1).

26743991 is an equidigital number, since it uses as much as digits as its factorization.

26743991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 26743991 is about 5171.4592718110. The cubic root of 26743991 is about 299.0488058046.

The spelling of 26743991 in words is "twenty-six million, seven hundred forty-three thousand, nine hundred ninety-one".