13666670 has 8 divisors (see below), whose sum is σ = 24600024. Its totient is φ = 5466664.

The previous prime is 13666663. The next prime is 13666673. The reversal of 13666670 is 7666631.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13666670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666673) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 683324 + ... + 683343.

It is an arithmetic number, because the mean of its divisors is an integer number (3075003).

Almost surely, 2^13666670 is an apocalyptic number.

13666670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13666670 is a deficient number, since it is larger than the sum of its proper divisors (10933354).

13666670 is a wasteful number, since it uses less digits than its factorization.

13666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366674.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 13666670 is about 3696.8459529713. The cubic root of 13666670 is about 239.0860494408.

The spelling of 13666670 in words is "thirteen million, six hundred sixty-six thousand, six hundred seventy".