13630639 has 8 divisors (see below), whose sum is σ = 14917968. Its totient is φ = 12351360.

The previous prime is 13630637. The next prime is 13630649. The reversal of 13630639 is 93603631.

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

It is a cyclic number.

It is not a de Polignac number, because 13630639 - 2¹ = 13630637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13630639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13630637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869 + ... + 5545.

It is an arithmetic number, because the mean of its divisors is an integer number (1864746).

Almost surely, 2^13630639 is an apocalyptic number.

13630639 is a deficient number, since it is larger than the sum of its proper divisors (1287329).

13630639 is a wasteful number, since it uses less digits than its factorization.

13630639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 13630639 is about 3691.9695285850. The cubic root of 13630639 is about 238.8757545891.

The spelling of 13630639 in words is "thirteen million, six hundred thirty thousand, six hundred thirty-nine".