12565983 has 8 divisors (see below), whose sum is σ = 16771248. Its totient is φ = 8369024.

The previous prime is 12565937. The next prime is 12565991. The reversal of 12565983 is 38956521.

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

It is a cyclic number.

It is not a de Polignac number, because 12565983 - 2⁶ = 12565919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12567983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3991 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (2096406).

Almost surely, 2^12565983 is an apocalyptic number.

12565983 is a deficient number, since it is larger than the sum of its proper divisors (4205265).

12565983 is a wasteful number, since it uses less digits than its factorization.

12565983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153.

The product of its digits is 64800, while the sum is 39.

The square root of 12565983 is about 3544.8530293935. The cubic root of 12565983 is about 232.4870798694.

The spelling of 12565983 in words is "twelve million, five hundred sixty-five thousand, nine hundred eighty-three".