13643233 has 4 divisors (see below), whose sum is σ = 13659568. Its totient is φ = 13626900.

The previous prime is 13643213. The next prime is 13643239. The reversal of 13643233 is 33234631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13643233 - 2²¹ = 11546081 is a prime.

It is a super-2 number, since 2×13643233² = 372275613384578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13643198 and 13643207.

It is not an unprimeable number, because it can be changed into a prime (13643239) 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 3 ways as a sum of consecutive naturals, for example, 6843 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (3414892).

Almost surely, 2^13643233 is an apocalyptic number.

It is an amenable number.

13643233 is a deficient number, since it is larger than the sum of its proper divisors (16335).

13643233 is an equidigital number, since it uses as much as digits as its factorization.

13643233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16334.

The product of its digits is 3888, while the sum is 25.

The square root of 13643233 is about 3693.6747285055. The cubic root of 13643233 is about 238.9493015248.

Adding to 13643233 its reverse (33234631), we get a palindrome (46877864).

The spelling of 13643233 in words is "thirteen million, six hundred forty-three thousand, two hundred thirty-three".