4638213 has 6 divisors (see below), whose sum is σ = 6699654. Its totient is φ = 3092136.

The previous prime is 4638211. The next prime is 4638239. The reversal of 4638213 is 3128364.

It is a happy number.

4638213 is a `hidden beast` number, since 4 + 638 + 21 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3560769 + 1077444 = 1887^2 + 1038^2 .

It is not a de Polignac number, because 4638213 - 2¹ = 4638211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257670 + ... + 257687.

It is an arithmetic number, because the mean of its divisors is an integer number (1116609).

Almost surely, 2^4638213 is an apocalyptic number.

It is an amenable number.

4638213 is a deficient number, since it is larger than the sum of its proper divisors (2061441).

4638213 is a wasteful number, since it uses less digits than its factorization.

4638213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515363 (or 515360 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 4638213 is about 2153.6510859468. The cubic root of 4638213 is about 166.7696035220.

It can be divided in two parts, 4638 and 213, that added together give a triangular number (4851 = T₉₈).

The spelling of 4638213 in words is "four million, six hundred thirty-eight thousand, two hundred thirteen".