1386686 has 16 divisors (see below), whose sum is σ = 2442336. Its totient is φ = 578016.

The previous prime is 1386667. The next prime is 1386691. The reversal of 1386686 is 6866831.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 821 + ... + 1856.

It is an arithmetic number, because the mean of its divisors is an integer number (152646).

2^1386686 is an apocalyptic number.

1386686 is a deficient number, since it is larger than the sum of its proper divisors (1055650).

1386686 is a wasteful number, since it uses less digits than its factorization.

1386686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723.

The product of its digits is 41472, while the sum is 38.

The square root of 1386686 is about 1177.5763244903. The cubic root of 1386686 is about 111.5131396769.

The spelling of 1386686 in words is "one million, three hundred eighty-six thousand, six hundred eighty-six".