26768817 has 12 divisors (see below), whose sum is σ = 38719044. Its totient is φ = 17821440.

The previous prime is 26768789. The next prime is 26768821. The reversal of 26768817 is 71886762.

It can be written as a sum of positive squares in 2 ways, for example, as 3381921 + 23386896 = 1839^2 + 4836^2 .

It is not a de Polignac number, because 26768817 - 2⁷ = 26768689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26768837) 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 in 11 ways as a sum of consecutive naturals, for example, 7017 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (3226587).

Almost surely, 2^26768817 is an apocalyptic number.

It is an amenable number.

26768817 is a deficient number, since it is larger than the sum of its proper divisors (11950227).

26768817 is a wasteful number, since it uses less digits than its factorization.

26768817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080 (or 4077 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 26768817 is about 5173.8590046502. The cubic root of 26768817 is about 299.1413111901.

The spelling of 26768817 in words is "twenty-six million, seven hundred sixty-eight thousand, eight hundred seventeen".