26748691 has 4 divisors (see below), whose sum is σ = 27611584. Its totient is φ = 25885800.

The previous prime is 26748649. The next prime is 26748703. The reversal of 26748691 is 19684762.

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

It is a cyclic number.

It is not a de Polignac number, because 26748691 - 2¹³ = 26740499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26748391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431400 + ... + 431461.

It is an arithmetic number, because the mean of its divisors is an integer number (6902896).

Almost surely, 2^26748691 is an apocalyptic number.

26748691 is a deficient number, since it is larger than the sum of its proper divisors (862893).

26748691 is an equidigital number, since it uses as much as digits as its factorization.

26748691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862892.

The product of its digits is 145152, while the sum is 43.

The square root of 26748691 is about 5171.9136690397. The cubic root of 26748691 is about 299.0663230986.

The spelling of 26748691 in words is "twenty-six million, seven hundred forty-eight thousand, six hundred ninety-one".