26001613 has 4 divisors (see below), whose sum is σ = 28365408. Its totient is φ = 23637820.

The previous prime is 26001611. The next prime is 26001631. The reversal of 26001613 is 31610062.

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 26001613 - 2¹ = 26001611 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 (26001611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181881 + ... + 1181902.

It is an arithmetic number, because the mean of its divisors is an integer number (7091352).

Almost surely, 2^26001613 is an apocalyptic number.

It is an amenable number.

26001613 is a deficient number, since it is larger than the sum of its proper divisors (2363795).

26001613 is a wasteful number, since it uses less digits than its factorization.

26001613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363794.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 26001613 is about 5099.1776788027. The cubic root of 26001613 is about 296.2557330040.

Adding to 26001613 its reverse (31610062), we get a palindrome (57611675).

The spelling of 26001613 in words is "twenty-six million, one thousand, six hundred thirteen".