12598681 has 4 divisors (see below), whose sum is σ = 12612132. Its totient is φ = 12585232.

The previous prime is 12598661. The next prime is 12598711. The reversal of 12598681 is 18689521.

12598681 is digitally balanced in base 3, because in such base 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 an emirpimes, since its reverse is a distinct semiprime: 18689521 = 19 ⋅983659.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 12425625 = 416^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 12598681 - 2¹⁹ = 12074393 is a prime.

It is a super-2 number, since 2×12598681² = 317453525879522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12598601) 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, 5206 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (3153033).

Almost surely, 2^12598681 is an apocalyptic number.

It is an amenable number.

12598681 is a deficient number, since it is larger than the sum of its proper divisors (13451).

12598681 is a wasteful number, since it uses less digits than its factorization.

12598681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13450.

The product of its digits is 34560, while the sum is 40.

The square root of 12598681 is about 3549.4620719202. The cubic root of 12598681 is about 232.6885571020.

The spelling of 12598681 in words is "twelve million, five hundred ninety-eight thousand, six hundred eighty-one".