26563893 has 4 divisors (see below), whose sum is σ = 35418528. Its totient is φ = 17709260.

The previous prime is 26563861. The next prime is 26563907. The reversal of 26563893 is 39836562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26563893 - 2⁵ = 26563861 is a prime.

It is a super-2 number, since 2×26563893² = 1411280822630898, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26563813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4427313 + ... + 4427318.

It is an arithmetic number, because the mean of its divisors is an integer number (8854632).

Almost surely, 2^26563893 is an apocalyptic number.

It is an amenable number.

26563893 is a deficient number, since it is larger than the sum of its proper divisors (8854635).

26563893 is an equidigital number, since it uses as much as digits as its factorization.

26563893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854634.

The product of its digits is 233280, while the sum is 42.

The square root of 26563893 is about 5154.0171711006. The cubic root of 26563893 is about 298.3760136462.

The spelling of 26563893 in words is "twenty-six million, five hundred sixty-three thousand, eight hundred ninety-three".