12353643 has 6 divisors (see below), whose sum is σ = 17844164. Its totient is φ = 8235756.

The previous prime is 12353633. The next prime is 12353651. The reversal of 12353643 is 34635321.

It is a happy number.

12353643 is a `hidden beast` number, since 12 + 3 + 5 + 3 + 643 = 666.

It is not a de Polignac number, because 12353643 - 2¹⁰ = 12352619 is a prime.

It is a super-2 number, since 2×12353643² = 305224990742898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12353633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686305 + ... + 686322.

Almost surely, 2^12353643 is an apocalyptic number.

12353643 is a deficient number, since it is larger than the sum of its proper divisors (5490521).

12353643 is a wasteful number, since it uses less digits than its factorization.

12353643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372633 (or 1372630 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 12353643 is about 3514.7749572341. The cubic root of 12353643 is about 231.1701113867.

Adding to 12353643 its reverse (34635321), we get a palindrome (46988964).

It can be divided in two parts, 12353 and 643, that added together give a square (12996 = 114²).

The spelling of 12353643 in words is "twelve million, three hundred fifty-three thousand, six hundred forty-three".