26768813 has 4 divisors (see below), whose sum is σ = 27207708. Its totient is φ = 26329920.

The previous prime is 26768789. The next prime is 26768821. The reversal of 26768813 is 31886762.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5442889 + 21325924 = 2333^2 + 4618^2 .

It is a cyclic number.

It is not a de Polignac number, because 26768813 - 2²² = 22574509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26768843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219356 + ... + 219477.

It is an arithmetic number, because the mean of its divisors is an integer number (6801927).

Almost surely, 2^26768813 is an apocalyptic number.

It is an amenable number.

26768813 is a deficient number, since it is larger than the sum of its proper divisors (438895).

26768813 is an equidigital number, since it uses as much as digits as its factorization.

26768813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438894.

The product of its digits is 96768, while the sum is 41.

The square root of 26768813 is about 5173.8586180915. The cubic root of 26768813 is about 299.1412962901.

The spelling of 26768813 in words is "twenty-six million, seven hundred sixty-eight thousand, eight hundred thirteen".