12630503 has 4 divisors (see below), whose sum is σ = 12637968. Its totient is φ = 12623040.

The previous prime is 12630487. The next prime is 12630509. The reversal of 12630503 is 30503621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30503621 = 29 ⋅1051849.

It is a cyclic number.

It is not a de Polignac number, because 12630503 - 2⁴ = 12630487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12630509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (3159492).

Almost surely, 2^12630503 is an apocalyptic number.

12630503 is a deficient number, since it is larger than the sum of its proper divisors (7465).

12630503 is an equidigital number, since it uses as much as digits as its factorization.

12630503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 12630503 is about 3553.9418959797. The cubic root of 12630503 is about 232.8843021898.

It can be divided in two parts, 126 and 30503, that multiplied together give a triangular number (3843378 = T₂₇₇₂).

The spelling of 12630503 in words is "twelve million, six hundred thirty thousand, five hundred three".