26640041 has 2 divisors, whose sum is σ = 26640042. Its totient is φ = 26640040.

The previous prime is 26640017. The next prime is 26640073. The reversal of 26640041 is 14004662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24790441 + 1849600 = 4979^2 + 1360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26640041 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26639989 and 26640016.

It is not a weakly prime, because it can be changed into another prime (26640001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320020 + 13320021.

It is an arithmetic number, because the mean of its divisors is an integer number (13320021).

Almost surely, 2^26640041 is an apocalyptic number.

It is an amenable number.

26640041 is a deficient number, since it is larger than the sum of its proper divisors (1).

26640041 is an equidigital number, since it uses as much as digits as its factorization.

26640041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 26640041 is about 5161.3991320184. The cubic root of 26640041 is about 298.6608496677.

The spelling of 26640041 in words is "twenty-six million, six hundred forty thousand, forty-one".