26644679 has 2 divisors, whose sum is σ = 26644680. Its totient is φ = 26644678.

The previous prime is 26644643. The next prime is 26644693. The reversal of 26644679 is 97644662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26644679 - 2¹² = 26640583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26644619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13322339 + 13322340.

It is an arithmetic number, because the mean of its divisors is an integer number (13322340).

Almost surely, 2^26644679 is an apocalyptic number.

26644679 is a deficient number, since it is larger than the sum of its proper divisors (1).

26644679 is an equidigital number, since it uses as much as digits as its factorization.

26644679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 26644679 is about 5161.8484092426. The cubic root of 26644679 is about 298.6781808302.

The spelling of 26644679 in words is "twenty-six million, six hundred forty-four thousand, six hundred seventy-nine".