12603643 has 8 divisors (see below), whose sum is σ = 13940528. Its totient is φ = 11319264.

The previous prime is 12603629. The next prime is 12603653. The reversal of 12603643 is 34630621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12603643 - 2⁵ = 12603611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12603653) 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 7 ways as a sum of consecutive naturals, for example, 12621 + ... + 13582.

It is an arithmetic number, because the mean of its divisors is an integer number (1742566).

Almost surely, 2^12603643 is an apocalyptic number.

12603643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12603643 is a deficient number, since it is larger than the sum of its proper divisors (1336885).

12603643 is a wasteful number, since it uses less digits than its factorization.

12603643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26253.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 12603643 is about 3550.1609822655. The cubic root of 12603643 is about 232.7191012802.

The spelling of 12603643 in words is "twelve million, six hundred three thousand, six hundred forty-three".