26863513 has 2 divisors, whose sum is σ = 26863514. Its totient is φ = 26863512.

The previous prime is 26863481. The next prime is 26863523. The reversal of 26863513 is 31536862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23068809 + 3794704 = 4803^2 + 1948^2 .

It is a cyclic number.

It is not a de Polignac number, because 26863513 - 2⁵ = 26863481 is a prime.

It is not a weakly prime, because it can be changed into another prime (26863523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13431756 + 13431757.

It is an arithmetic number, because the mean of its divisors is an integer number (13431757).

Almost surely, 2^26863513 is an apocalyptic number.

It is an amenable number.

26863513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26863513 is an equidigital number, since it uses as much as digits as its factorization.

26863513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 26863513 is about 5183.0023152609. The cubic root of 26863513 is about 299.4936383999.

The spelling of 26863513 in words is "twenty-six million, eight hundred sixty-three thousand, five hundred thirteen".