4686638 has 8 divisors (see below), whose sum is σ = 7669080. Its totient is φ = 2130280.

The previous prime is 4686637. The next prime is 4686653. The reversal of 4686638 is 8366864.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4686595 and 4686604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4686637) 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, 106493 + ... + 106536.

It is an arithmetic number, because the mean of its divisors is an integer number (958635).

Almost surely, 2^4686638 is an apocalyptic number.

4686638 is a deficient number, since it is larger than the sum of its proper divisors (2982442).

4686638 is a wasteful number, since it uses less digits than its factorization.

4686638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213042.

The product of its digits is 165888, while the sum is 41.

The square root of 4686638 is about 2164.8644299355. The cubic root of 4686638 is about 167.3479782036.

The spelling of 4686638 in words is "four million, six hundred eighty-six thousand, six hundred thirty-eight".