1386680 has 16 divisors (see below), whose sum is σ = 3120120. Its totient is φ = 554656.

The previous prime is 1386667. The next prime is 1386691. The reversal of 1386680 is 866831.

1386680 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17294 + ... + 17373.

2^1386680 is an apocalyptic number.

1386680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386680 is an abundant number, since it is smaller than the sum of its proper divisors (1733440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386680 is a wasteful number, since it uses less digits than its factorization.

1386680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34678 (or 34674 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1386680 is about 1177.5737768819. The cubic root of 1386680 is about 111.5129788427.

The spelling of 1386680 in words is "one million, three hundred eighty-six thousand, six hundred eighty".