13686670 has 32 divisors (see below), whose sum is σ = 25707456. Its totient is φ = 5241600.

The previous prime is 13686641. The next prime is 13686689. The reversal of 13686670 is 7668631.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

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, 26010 + ... + 26530.

It is an arithmetic number, because the mean of its divisors is an integer number (803358).

Almost surely, 2^13686670 is an apocalyptic number.

13686670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13686670 is a deficient number, since it is larger than the sum of its proper divisors (12020786).

13686670 is a wasteful number, since it uses less digits than its factorization.

13686670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 13686670 is about 3699.5499726318. The cubic root of 13686670 is about 239.2026199084.

The spelling of 13686670 in words is "thirteen million, six hundred eighty-six thousand, six hundred seventy".