12663537 has 4 divisors (see below), whose sum is σ = 16884720. Its totient is φ = 8442356.

The previous prime is 12663493. The next prime is 12663569. The reversal of 12663537 is 73536621.

12663537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12663537 - 2⁶ = 12663473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12663498 and 12663507.

It is not an unprimeable number, because it can be changed into a prime (12663577) 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, 2110587 + ... + 2110592.

It is an arithmetic number, because the mean of its divisors is an integer number (4221180).

Almost surely, 2^12663537 is an apocalyptic number.

It is an amenable number.

12663537 is a deficient number, since it is larger than the sum of its proper divisors (4221183).

12663537 is an equidigital number, since it uses as much as digits as its factorization.

12663537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221182.

The product of its digits is 22680, while the sum is 33.

The square root of 12663537 is about 3558.5863766389. The cubic root of 12663537 is about 233.0871551003.

The spelling of 12663537 in words is "twelve million, six hundred sixty-three thousand, five hundred thirty-seven".