12563965 has 8 divisors (see below), whose sum is σ = 15095808. Its totient is φ = 10038480.

The previous prime is 12563963. The next prime is 12563977. The reversal of 12563965 is 56936521.

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

It is not a de Polignac number, because 12563965 - 2¹ = 12563963 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 (12563963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6724 + ... + 8386.

It is an arithmetic number, because the mean of its divisors is an integer number (1886976).

Almost surely, 2^12563965 is an apocalyptic number.

It is an amenable number.

12563965 is a deficient number, since it is larger than the sum of its proper divisors (2531843).

12563965 is a wasteful number, since it uses less digits than its factorization.

12563965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its digits is 48600, while the sum is 37.

The square root of 12563965 is about 3544.5683799301. The cubic root of 12563965 is about 232.4746339922.

The spelling of 12563965 in words is "twelve million, five hundred sixty-three thousand, nine hundred sixty-five".