3638679 has 16 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 2172800.

The previous prime is 3638653. The next prime is 3638699. The reversal of 3638679 is 9768363.

It is a cyclic number.

It is not a de Polignac number, because 3638679 - 2¹¹ = 3636631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3638679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638639) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1567 + ... + 3119.

It is an arithmetic number, because the mean of its divisors is an integer number (335664).

Almost surely, 2^3638679 is an apocalyptic number.

3638679 is a deficient number, since it is larger than the sum of its proper divisors (1731945).

3638679 is a wasteful number, since it uses less digits than its factorization.

3638679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638.

The product of its digits is 163296, while the sum is 42.

The square root of 3638679 is about 1907.5321753512. The cubic root of 3638679 is about 153.8088227564.

The spelling of 3638679 in words is "three million, six hundred thirty-eight thousand, six hundred seventy-nine".