13665630 has 32 divisors (see below), whose sum is σ = 35779968. Its totient is φ = 3312800.

The previous prime is 13665629. The next prime is 13665643. The reversal of 13665630 is 3656631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 20376 + ... + 21035.

It is an arithmetic number, because the mean of its divisors is an integer number (1118124).

Almost surely, 2^13665630 is an apocalyptic number.

13665630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13665630 is an abundant number, since it is smaller than the sum of its proper divisors (22114338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13665630 is a wasteful number, since it uses less digits than its factorization.

13665630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41432.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 13665630 is about 3696.7052898493. The cubic root of 13665630 is about 239.0799846667.

It can be divided in two parts, 1366 and 5630, that added together give a palindrome (6996).

The spelling of 13665630 in words is "thirteen million, six hundred sixty-five thousand, six hundred thirty".