12653603 has 2 divisors, whose sum is σ = 12653604. Its totient is φ = 12653602.

The previous prime is 12653579. The next prime is 12653609. The reversal of 12653603 is 30635621.

It is a strong prime.

It is an emirp because it is prime and its reverse (30635621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12653603 - 2⁶ = 12653539 is a prime.

It is a super-2 number, since 2×12653603² = 320227337763218, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12653609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326801 + 6326802.

It is an arithmetic number, because the mean of its divisors is an integer number (6326802).

Almost surely, 2^12653603 is an apocalyptic number.

12653603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12653603 is an equidigital number, since it uses as much as digits as its factorization.

12653603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 12653603 is about 3557.1903238371. The cubic root of 12653603 is about 233.0261902075.

The spelling of 12653603 in words is "twelve million, six hundred fifty-three thousand, six hundred three".