12663541 has 8 divisors (see below), whose sum is σ = 13950144. Its totient is φ = 11399520.

The previous prime is 12663493. The next prime is 12663569. The reversal of 12663541 is 14536621.

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

It is not a de Polignac number, because 12663541 - 2⁹ = 12663029 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 (12663241) 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 7 ways as a sum of consecutive naturals, for example, 4456 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (1743768).

Almost surely, 2^12663541 is an apocalyptic number.

12663541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12663541 is a deficient number, since it is larger than the sum of its proper divisors (1286603).

12663541 is a wasteful number, since it uses less digits than its factorization.

12663541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291.

The product of its digits is 4320, while the sum is 28.

The square root of 12663541 is about 3558.5869386598. The cubic root of 12663541 is about 233.0871796419.

Subtracting 12663541 from its reverse (14536621), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 12663541 in words is "twelve million, six hundred sixty-three thousand, five hundred forty-one".