1606684 has 6 divisors (see below), whose sum is σ = 2811704. Its totient is φ = 803340.

The previous prime is 1606681. The next prime is 1606723. The reversal of 1606684 is 4866061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200832 + ... + 200839.

2^1606684 is an apocalyptic number.

It is an amenable number.

1606684 is a deficient number, since it is larger than the sum of its proper divisors (1205020).

1606684 is a wasteful number, since it uses less digits than its factorization.

1606684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401675 (or 401673 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1606684 is about 1267.5503934755. The cubic root of 1606684 is about 117.1233510480.

The spelling of 1606684 in words is "one million, six hundred six thousand, six hundred eighty-four".