4686643 has 4 divisors (see below), whose sum is σ = 5047168. Its totient is φ = 4326120.

The previous prime is 4686637. The next prime is 4686653. The reversal of 4686643 is 3466864.

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

It is a cyclic number.

It is not a de Polignac number, because 4686643 - 2⁹ = 4686131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4686623) 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, 180243 + ... + 180268.

It is an arithmetic number, because the mean of its divisors is an integer number (1261792).

Almost surely, 2^4686643 is an apocalyptic number.

4686643 is a deficient number, since it is larger than the sum of its proper divisors (360525).

4686643 is a wasteful number, since it uses less digits than its factorization.

4686643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360524.

The product of its digits is 82944, while the sum is 37.

The square root of 4686643 is about 2164.8655847419. The cubic root of 4686643 is about 167.3480377160.

It can be divided in two parts, 4686 and 643, that added together give a square (5329 = 73²).

The spelling of 4686643 in words is "four million, six hundred eighty-six thousand, six hundred forty-three".