12689335 has 16 divisors (see below), whose sum is σ = 15803136. Its totient is φ = 9773568.

The previous prime is 12689317. The next prime is 12689357. The reversal of 12689335 is 53398621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12689335 is a prime.

It is a super-2 number, since 2×12689335² = 322038445484450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12689294 and 12689303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20602 + ... + 21208.

It is an arithmetic number, because the mean of its divisors is an integer number (987696).

Almost surely, 2^12689335 is an apocalyptic number.

12689335 is a deficient number, since it is larger than the sum of its proper divisors (3113801).

12689335 is a wasteful number, since it uses less digits than its factorization.

12689335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its digits is 38880, while the sum is 37.

The square root of 12689335 is about 3562.2092863839. The cubic root of 12689335 is about 233.2453284900.

The spelling of 12689335 in words is "twelve million, six hundred eighty-nine thousand, three hundred thirty-five".