12905603 has 2 divisors, whose sum is σ = 12905604. Its totient is φ = 12905602.

The previous prime is 12905573. The next prime is 12905639. The reversal of 12905603 is 30650921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12905603 - 2⁶ = 12905539 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12905663) 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 as a sum of consecutive naturals, namely, 6452801 + 6452802.

It is an arithmetic number, because the mean of its divisors is an integer number (6452802).

Almost surely, 2^12905603 is an apocalyptic number.

12905603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12905603 is an equidigital number, since it uses as much as digits as its factorization.

12905603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 12905603 is about 3592.4369166347. The cubic root of 12905603 is about 234.5629601677.

The spelling of 12905603 in words is "twelve million, nine hundred five thousand, six hundred three".