12659613 has 4 divisors (see below), whose sum is σ = 16879488. Its totient is φ = 8439740.

The previous prime is 12659609. The next prime is 12659617. The reversal of 12659613 is 31695621.

It is a happy number.

12659613 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (12659609) and next prime (12659617).

It is a cyclic number.

It is not a de Polignac number, because 12659613 - 2² = 12659609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12659617) 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, 2109933 + ... + 2109938.

It is an arithmetic number, because the mean of its divisors is an integer number (4219872).

Almost surely, 2^12659613 is an apocalyptic number.

It is an amenable number.

12659613 is a deficient number, since it is larger than the sum of its proper divisors (4219875).

12659613 is an equidigital number, since it uses as much as digits as its factorization.

12659613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219874.

The product of its digits is 9720, while the sum is 33.

The square root of 12659613 is about 3558.0349913962. The cubic root of 12659613 is about 233.0630773490.

It can be divided in two parts, 1265 and 9613, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 12659613 in words is "twelve million, six hundred fifty-nine thousand, six hundred thirteen".