13730866 has 8 divisors (see below), whose sum is σ = 21807900. Its totient is φ = 6461568.

The previous prime is 13730851. The next prime is 13730867. The reversal of 13730866 is 66803731.

It can be written as a sum of positive squares in 2 ways, for example, as 13653025 + 77841 = 3695^2 + 279^2 .

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

It is a super-2 number, since 2×13730866² = 377073362219912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 403849 = 13730866 / (1 + 3 + 7 + 3 + 0 + 8 + 6 + 6).

It is not an unprimeable number, because it can be changed into a prime (13730867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201891 + ... + 201958.

Almost surely, 2^13730866 is an apocalyptic number.

13730866 is a deficient number, since it is larger than the sum of its proper divisors (8077034).

13730866 is a wasteful number, since it uses less digits than its factorization.

13730866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403868.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 13730866 is about 3705.5183173208. The cubic root of 13730866 is about 239.4598151729.

The spelling of 13730866 in words is "thirteen million, seven hundred thirty thousand, eight hundred sixty-six".