26768069 has 4 divisors (see below), whose sum is σ = 26778444. Its totient is φ = 26757696.

The previous prime is 26768011. The next prime is 26768089. The reversal of 26768069 is 96086762.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14250625 + 12517444 = 3775^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 26768069 - 2⁸ = 26767813 is a prime.

It is a super-2 number, since 2×26768069² = 1433059035977522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26768009) 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, 2039 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (6694611).

Almost surely, 2^26768069 is an apocalyptic number.

It is an amenable number.

26768069 is a deficient number, since it is larger than the sum of its proper divisors (10375).

26768069 is an equidigital number, since it uses as much as digits as its factorization.

26768069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 26768069 is about 5173.7867176759. The cubic root of 26768069 is about 299.1385248662.

The spelling of 26768069 in words is "twenty-six million, seven hundred sixty-eight thousand, sixty-nine".