1681084 has 6 divisors (see below), whose sum is σ = 2941904. Its totient is φ = 840540.

The previous prime is 1681073. The next prime is 1681091. The reversal of 1681084 is 4801861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210132 + ... + 210139.

2^1681084 is an apocalyptic number.

It is an amenable number.

1681084 is a deficient number, since it is larger than the sum of its proper divisors (1260820).

1681084 is a wasteful number, since it uses less digits than its factorization.

1681084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420275 (or 420273 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1681084 is about 1296.5662343282. The cubic root of 1681084 is about 118.9040018572.

It can be divided in two parts, 16810 and 84, that multiplied together give a triangular number (1412040 = T₁₆₈₀).

The spelling of 1681084 in words is "one million, six hundred eighty-one thousand, eighty-four".