26612513 has 4 divisors (see below), whose sum is σ = 26911620. Its totient is φ = 26313408.

The previous prime is 26612507. The next prime is 26612527. The reversal of 26612513 is 31521662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31521662 = 2 ⋅15760831.

It can be written as a sum of positive squares in 2 ways, for example, as 10387729 + 16224784 = 3223^2 + 4028^2 .

It is a cyclic number.

It is not a de Polignac number, because 26612513 - 2¹⁰ = 26611489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26612543) 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, 149420 + ... + 149597.

It is an arithmetic number, because the mean of its divisors is an integer number (6727905).

Almost surely, 2^26612513 is an apocalyptic number.

It is an amenable number.

26612513 is a deficient number, since it is larger than the sum of its proper divisors (299107).

26612513 is an equidigital number, since it uses as much as digits as its factorization.

26612513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299106.

The product of its digits is 2160, while the sum is 26.

The square root of 26612513 is about 5158.7317239802. The cubic root of 26612513 is about 298.5579423016.

The spelling of 26612513 in words is "twenty-six million, six hundred twelve thousand, five hundred thirteen".