13665830 has 32 divisors (see below), whose sum is σ = 25632288. Its totient is φ = 5241600.

The previous prime is 13665811. The next prime is 13665851. The reversal of 13665830 is 3856631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25970 + ... + 26490.

It is an arithmetic number, because the mean of its divisors is an integer number (801009).

Almost surely, 2^13665830 is an apocalyptic number.

13665830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13665830 is a deficient number, since it is larger than the sum of its proper divisors (11966458).

13665830 is a wasteful number, since it uses less digits than its factorization.

13665830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 13665830 is about 3696.7323408654. The cubic root of 13665830 is about 239.0811509934.

The spelling of 13665830 in words is "thirteen million, six hundred sixty-five thousand, eight hundred thirty".