26098613 has 4 divisors (see below), whose sum is σ = 26207148. Its totient is φ = 25990080.

The previous prime is 26098547. The next prime is 26098619. The reversal of 26098613 is 31689062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7496644 + 18601969 = 2738^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 26098613 - 2¹² = 26094517 is a prime.

It is a super-3 number, since 3×26098613³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26098619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53906 + ... + 54387.

It is an arithmetic number, because the mean of its divisors is an integer number (6551787).

Almost surely, 2^26098613 is an apocalyptic number.

It is an amenable number.

26098613 is a deficient number, since it is larger than the sum of its proper divisors (108535).

26098613 is a wasteful number, since it uses less digits than its factorization.

26098613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108534.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 26098613 is about 5108.6801622337. The cubic root of 26098613 is about 296.6236735801.

The spelling of 26098613 in words is "twenty-six million, ninety-eight thousand, six hundred thirteen".