26065513 has 4 divisors (see below), whose sum is σ = 26906368. Its totient is φ = 25224660.

The previous prime is 26065499. The next prime is 26065517. The reversal of 26065513 is 31556062.

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 26065513 - 2²¹ = 23968361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26065517) 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, 420381 + ... + 420442.

It is an arithmetic number, because the mean of its divisors is an integer number (6726592).

Almost surely, 2^26065513 is an apocalyptic number.

It is an amenable number.

26065513 is a deficient number, since it is larger than the sum of its proper divisors (840855).

26065513 is an equidigital number, since it uses as much as digits as its factorization.

26065513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840854.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 26065513 is about 5105.4395501269. The cubic root of 26065513 is about 296.4982212270.

The spelling of 26065513 in words is "twenty-six million, sixty-five thousand, five hundred thirteen".