26580947 has 4 divisors (see below), whose sum is σ = 26636016. Its totient is φ = 26525880.

The previous prime is 26580937. The next prime is 26580971. The reversal of 26580947 is 74908562.

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 26580947 - 2⁸ = 26580691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26580937) 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, 26804 + ... + 27777.

It is an arithmetic number, because the mean of its divisors is an integer number (6659004).

Almost surely, 2^26580947 is an apocalyptic number.

26580947 is a deficient number, since it is larger than the sum of its proper divisors (55069).

26580947 is an equidigital number, since it uses as much as digits as its factorization.

26580947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55068.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 26580947 is about 5155.6713432879. The cubic root of 26580947 is about 298.4398523813.

The spelling of 26580947 in words is "twenty-six million, five hundred eighty thousand, nine hundred forty-seven".