12883645 has 4 divisors (see below), whose sum is σ = 15460380. Its totient is φ = 10306912.

The previous prime is 12883643. The next prime is 12883709. The reversal of 12883645 is 54638821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7986276 + 4897369 = 2826^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 12883645 - 2¹ = 12883643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12883643) 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 3 ways as a sum of consecutive naturals, for example, 1288360 + ... + 1288369.

It is an arithmetic number, because the mean of its divisors is an integer number (3865095).

Almost surely, 2^12883645 is an apocalyptic number.

It is an amenable number.

12883645 is a deficient number, since it is larger than the sum of its proper divisors (2576735).

12883645 is an equidigital number, since it uses as much as digits as its factorization.

12883645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576734.

The product of its digits is 46080, while the sum is 37.

The square root of 12883645 is about 3589.3794728337. The cubic root of 12883645 is about 234.4298537090.

It can be divided in two parts, 128836 and 45, that added together give a square (128881 = 359²).

The spelling of 12883645 in words is "twelve million, eight hundred eighty-three thousand, six hundred forty-five".