26864797 has 4 divisors (see below), whose sum is σ = 26908956. Its totient is φ = 26820640.

The previous prime is 26864791. The next prime is 26864813. The reversal of 26864797 is 79746862.

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 1674436 + 25190361 = 1294^2 + 5019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26864797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26864797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26864791) 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, 21154 + ... + 22387.

It is an arithmetic number, because the mean of its divisors is an integer number (6727239).

Almost surely, 2^26864797 is an apocalyptic number.

It is an amenable number.

26864797 is a deficient number, since it is larger than the sum of its proper divisors (44159).

26864797 is an equidigital number, since it uses as much as digits as its factorization.

26864797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44158.

The product of its digits is 1016064, while the sum is 49.

The square root of 26864797 is about 5183.1261802121. The cubic root of 26864797 is about 299.4984099737.

The spelling of 26864797 in words is "twenty-six million, eight hundred sixty-four thousand, seven hundred ninety-seven".