26864147 has 2 divisors, whose sum is σ = 26864148. Its totient is φ = 26864146.

The previous prime is 26864129. The next prime is 26864153. The reversal of 26864147 is 74146862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26864147 - 2²⁴ = 10086931 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26864147.

It is not a weakly prime, because it can be changed into another prime (26864107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13432073 + 13432074.

It is an arithmetic number, because the mean of its divisors is an integer number (13432074).

Almost surely, 2^26864147 is an apocalyptic number.

26864147 is a deficient number, since it is larger than the sum of its proper divisors (1).

26864147 is an equidigital number, since it uses as much as digits as its factorization.

26864147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 26864147 is about 5183.0634763622. The cubic root of 26864147 is about 299.4959944764.

The spelling of 26864147 in words is "twenty-six million, eight hundred sixty-four thousand, one hundred forty-seven".