3638673 has 12 divisors (see below), whose sum is σ = 5273268. Its totient is φ = 2417760.

The previous prime is 3638653. The next prime is 3638699. The reversal of 3638673 is 3768363.

3638673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2169729 + 1468944 = 1473^2 + 1212^2 .

It is not a de Polignac number, because 3638673 - 2⁵ = 3638641 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3638653) 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 11 ways as a sum of consecutive naturals, for example, 3711 + ... + 4587.

It is an arithmetic number, because the mean of its divisors is an integer number (439439).

Almost surely, 2^3638673 is an apocalyptic number.

It is an amenable number.

3638673 is a deficient number, since it is larger than the sum of its proper divisors (1634595).

3638673 is a wasteful number, since it uses less digits than its factorization.

3638673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1341 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 3638673 is about 1907.5306026379. The cubic root of 3638673 is about 153.8087382153.

The spelling of 3638673 in words is "three million, six hundred thirty-eight thousand, six hundred seventy-three".