26640743 has 2 divisors, whose sum is σ = 26640744. Its totient is φ = 26640742.

The previous prime is 26640721. The next prime is 26640769. The reversal of 26640743 is 34704662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26640743 - 2⁸ = 26640487 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 (26640643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320371 + 13320372.

It is an arithmetic number, because the mean of its divisors is an integer number (13320372).

Almost surely, 2^26640743 is an apocalyptic number.

26640743 is a deficient number, since it is larger than the sum of its proper divisors (1).

26640743 is an equidigital number, since it uses as much as digits as its factorization.

26640743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 26640743 is about 5161.4671363867. The cubic root of 26640743 is about 298.6634730129.

The spelling of 26640743 in words is "twenty-six million, six hundred forty thousand, seven hundred forty-three".