26261863 has 4 divisors (see below), whose sum is σ = 26872648. Its totient is φ = 25651080.

The previous prime is 26261839. The next prime is 26261869. The reversal of 26261863 is 36816262.

It is a happy number.

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 26261863 - 2⁹ = 26261351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26261869) 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, 305328 + ... + 305413.

It is an arithmetic number, because the mean of its divisors is an integer number (6718162).

Almost surely, 2^26261863 is an apocalyptic number.

26261863 is a deficient number, since it is larger than the sum of its proper divisors (610785).

26261863 is an equidigital number, since it uses as much as digits as its factorization.

26261863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610784.

The product of its digits is 20736, while the sum is 34.

The square root of 26261863 is about 5124.6329624667. The cubic root of 26261863 is about 297.2408608932.

It can be divided in two parts, 2626 and 1863, that added together give a square (4489 = 67²).

The spelling of 26261863 in words is "twenty-six million, two hundred sixty-one thousand, eight hundred sixty-three".