26664941 has 2 divisors, whose sum is σ = 26664942. Its totient is φ = 26664940.

The previous prime is 26664931. The next prime is 26664943. The reversal of 26664941 is 14946662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13912900 + 12752041 = 3730^2 + 3571^2 .

It is a cyclic number.

It is not a de Polignac number, because 26664941 - 2¹⁸ = 26402797 is a prime.

It is a super-2 number, since 2×26664941² = 1422038157066962, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 26664943, it forms a pair of twin primes.

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 = 26664895 and 26664904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26664943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13332470 + 13332471.

It is an arithmetic number, because the mean of its divisors is an integer number (13332471).

Almost surely, 2^26664941 is an apocalyptic number.

It is an amenable number.

26664941 is a deficient number, since it is larger than the sum of its proper divisors (1).

26664941 is an equidigital number, since it uses as much as digits as its factorization.

26664941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 26664941 is about 5163.8107052835. The cubic root of 26664941 is about 298.7538717891.

The spelling of 26664941 in words is "twenty-six million, six hundred sixty-four thousand, nine hundred forty-one".