4664638 has 8 divisors (see below), whose sum is σ = 7633080. Its totient is φ = 2120280.

The previous prime is 4664603. The next prime is 4664641. The reversal of 4664638 is 8364664.

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

It is a junction number, because it is equal to n+sod(n) for n = 4664597 and 4664606.

It is a congruent number.

It is an unprimeable number.

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, 105993 + ... + 106036.

It is an arithmetic number, because the mean of its divisors is an integer number (954135).

Almost surely, 2^4664638 is an apocalyptic number.

4664638 is a deficient number, since it is larger than the sum of its proper divisors (2968442).

4664638 is a wasteful number, since it uses less digits than its factorization.

4664638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212042.

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

The square root of 4664638 is about 2159.7773033348. Note that the first 3 decimals coincide. The cubic root of 4664638 is about 167.0857126310.

The spelling of 4664638 in words is "four million, six hundred sixty-four thousand, six hundred thirty-eight".