3666986 has 8 divisors (see below), whose sum is σ = 5533920. Its totient is φ = 1822348.

The previous prime is 3666979. The next prime is 3666991. The reversal of 3666986 is 6896663.

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

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 3 ways as a sum of consecutive naturals, for example, 5156 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^3666986 is an apocalyptic number.

3666986 is a deficient number, since it is larger than the sum of its proper divisors (1866934).

3666986 is a wasteful number, since it uses less digits than its factorization.

3666986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11148.

The product of its digits is 279936, while the sum is 44.

The square root of 3666986 is about 1914.9375968945. The cubic root of 3666986 is about 154.2066433784.

The spelling of 3666986 in words is "three million, six hundred sixty-six thousand, nine hundred eighty-six".