1681027 has 2 divisors, whose sum is σ = 1681028. Its totient is φ = 1681026.

The previous prime is 1681007. The next prime is 1681033. The reversal of 1681027 is 7201861.

It is a strong prime.

It is an emirp because it is prime and its reverse (7201861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1681027 - 2¹¹ = 1678979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1680992 and 1681010.

It is not a weakly prime, because it can be changed into another prime (1681007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840513 + 840514.

It is an arithmetic number, because the mean of its divisors is an integer number (840514).

2^1681027 is an apocalyptic number.

1681027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681027 is an equidigital number, since it uses as much as digits as its factorization.

1681027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1681027 is about 1296.5442530049. The cubic root of 1681027 is about 118.9026579615.

Adding to 1681027 its reverse (7201861), we get a palindrome (8882888).

The spelling of 1681027 in words is "one million, six hundred eighty-one thousand, twenty-seven".