3638385 has 16 divisors (see below), whose sum is σ = 6468480. Its totient is φ = 1940400.

The previous prime is 3638351. The next prime is 3638407. The reversal of 3638385 is 5838363.

3638385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3638385 - 2¹² = 3634289 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13341 + ... + 13610.

It is an arithmetic number, because the mean of its divisors is an integer number (404280).

Almost surely, 2^3638385 is an apocalyptic number.

It is an amenable number.

3638385 is a deficient number, since it is larger than the sum of its proper divisors (2830095).

3638385 is a wasteful number, since it uses less digits than its factorization.

3638385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26965 (or 26959 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3638385 is about 1907.4551108742. The cubic root of 3638385 is about 153.8046801347.

The spelling of 3638385 in words is "three million, six hundred thirty-eight thousand, three hundred eighty-five".