12689603 has 2 divisors, whose sum is σ = 12689604. Its totient is φ = 12689602.

The previous prime is 12689597. The next prime is 12689609. The reversal of 12689603 is 30698621.

It is a balanced prime because it is at equal distance from previous prime (12689597) and next prime (12689609).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12689603 is a prime.

It is a super-2 number, since 2×12689603² = 322052048595218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12689609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344801 + 6344802.

It is an arithmetic number, because the mean of its divisors is an integer number (6344802).

Almost surely, 2^12689603 is an apocalyptic number.

12689603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689603 is an equidigital number, since it uses as much as digits as its factorization.

12689603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12689603 is about 3562.2469032901. The cubic root of 12689603 is about 233.2469705331.

The spelling of 12689603 in words is "twelve million, six hundred eighty-nine thousand, six hundred three".