12605803 has 4 divisors (see below), whose sum is σ = 14406640. Its totient is φ = 10804968.

The previous prime is 12605783. The next prime is 12605821. The reversal of 12605803 is 30850621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12605803 - 2¹⁷ = 12474731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12605503) 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, 900408 + ... + 900421.

It is an arithmetic number, because the mean of its divisors is an integer number (3601660).

Almost surely, 2^12605803 is an apocalyptic number.

12605803 is a deficient number, since it is larger than the sum of its proper divisors (1800837).

12605803 is an equidigital number, since it uses as much as digits as its factorization.

12605803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800836.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12605803 is about 3550.4651807897. The cubic root of 12605803 is about 232.7323949114.

The spelling of 12605803 in words is "twelve million, six hundred five thousand, eight hundred three".