1683081 has 6 divisors (see below), whose sum is σ = 2431130. Its totient is φ = 1122048.

The previous prime is 1683067. The next prime is 1683089. The reversal of 1683081 is 1803861.

It can be written as a sum of positive squares in only one way, i.e., 1587600 + 95481 = 1260^2 + 309^2 .

It is not a de Polignac number, because 1683081 - 2⁵ = 1683049 is a prime.

It is a super-2 number, since 2×1683081² = 5665523305122, which contains 22 as substring.

It is a Duffinian number.

1683081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1683089) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 93496 + ... + 93513.

2^1683081 is an apocalyptic number.

It is an amenable number.

1683081 is a deficient number, since it is larger than the sum of its proper divisors (748049).

1683081 is a wasteful number, since it uses less digits than its factorization.

1683081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187015 (or 187012 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1683081 is about 1297.3361168178. The cubic root of 1683081 is about 118.9510661976.

It can be divided in two parts, 168 and 3081, that added together give a square (3249 = 57²).

The spelling of 1683081 in words is "one million, six hundred eighty-three thousand, eighty-one".