12503643 has 4 divisors (see below), whose sum is σ = 16671528. Its totient is φ = 8335760.

The previous prime is 12503641. The next prime is 12503663. The reversal of 12503643 is 34630521.

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 12503643 - 2¹ = 12503641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12503641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083938 + ... + 2083943.

It is an arithmetic number, because the mean of its divisors is an integer number (4167882).

Almost surely, 2^12503643 is an apocalyptic number.

12503643 is a deficient number, since it is larger than the sum of its proper divisors (4167885).

12503643 is an equidigital number, since it uses as much as digits as its factorization.

12503643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167884.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 12503643 is about 3536.0490664017. The cubic root of 12503643 is about 232.1019852349.

The spelling of 12503643 in words is "twelve million, five hundred three thousand, six hundred forty-three".