1682489 has 2 divisors, whose sum is σ = 1682490. Its totient is φ = 1682488.

The previous prime is 1682479. The next prime is 1682509. The reversal of 1682489 is 9842861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 13225 = 1292^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1682489 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1682449) 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 as a sum of consecutive naturals, namely, 841244 + 841245.

It is an arithmetic number, because the mean of its divisors is an integer number (841245).

2^1682489 is an apocalyptic number.

It is an amenable number.

1682489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682489 is an equidigital number, since it uses as much as digits as its factorization.

1682489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 1682489 is about 1297.1079369120. The cubic root of 1682489 is about 118.9371181090.

The spelling of 1682489 in words is "one million, six hundred eighty-two thousand, four hundred eighty-nine".