1682005 has 16 divisors (see below), whose sum is σ = 2202480. Its totient is φ = 1225728.

The previous prime is 1681991. The next prime is 1682017. The reversal of 1682005 is 5002861.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 178929 + 1503076 = 423^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682005 - 2⁵ = 1681973 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7231 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (137655).

2^1682005 is an apocalyptic number.

It is an amenable number.

1682005 is a deficient number, since it is larger than the sum of its proper divisors (520475).

1682005 is a wasteful number, since it uses less digits than its factorization.

1682005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1682005 is about 1296.9213545933. The cubic root of 1682005 is about 118.9257121729.

Adding to 1682005 its reverse (5002861), we get a palindrome (6684866).

The spelling of 1682005 in words is "one million, six hundred eighty-two thousand, five".