26013563 has 4 divisors (see below), whose sum is σ = 26028288. Its totient is φ = 25998840.

The previous prime is 26013541. The next prime is 26013569. The reversal of 26013563 is 36531062.

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 26013563 - 2⁸ = 26013307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26013569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4283 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (6507072).

Almost surely, 2^26013563 is an apocalyptic number.

26013563 is a deficient number, since it is larger than the sum of its proper divisors (14725).

26013563 is a wasteful number, since it uses less digits than its factorization.

26013563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14724.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 26013563 is about 5100.3493017636. The cubic root of 26013563 is about 296.3011111349.

The spelling of 26013563 in words is "twenty-six million, thirteen thousand, five hundred sixty-three".