1686332 has 12 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 793536.

The previous prime is 1686329. The next prime is 1686341. The reversal of 1686332 is 2336861.

It is a super-2 number, since 2×1686332² = 5687431228448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1686295 and 1686304.

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 3 ways as a sum of consecutive naturals, for example, 12332 + ... + 12467.

It is an arithmetic number, because the mean of its divisors is an integer number (260400).

2^1686332 is an apocalyptic number.

It is an amenable number.

1686332 is a deficient number, since it is larger than the sum of its proper divisors (1438468).

1686332 is a wasteful number, since it uses less digits than its factorization.

1686332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24820 (or 24818 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1686332 is about 1298.5884644490. The cubic root of 1686332 is about 119.0276046404.

The spelling of 1686332 in words is "one million, six hundred eighty-six thousand, three hundred thirty-two".