1682217 has 12 divisors (see below), whose sum is σ = 2441140. Its totient is φ = 1116288.

The previous prime is 1682207. The next prime is 1682237. The reversal of 1682217 is 7122861.

It can be written as a sum of positive squares in 2 ways, for example, as 1498176 + 184041 = 1224^2 + 429^2 .

It is not a de Polignac number, because 1682217 - 2¹⁰ = 1681193 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8³ + 2⁵ + 2¹¹ + 1 + 7 .

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1682207) 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 11 ways as a sum of consecutive naturals, for example, 3453 + ... + 3909.

2^1682217 is an apocalyptic number.

It is an amenable number.

1682217 is a deficient number, since it is larger than the sum of its proper divisors (758923).

1682217 is a wasteful number, since it uses less digits than its factorization.

1682217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 869 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1682217 is about 1297.0030840364. The cubic root of 1682217 is about 118.9307084307.

The spelling of 1682217 in words is "one million, six hundred eighty-two thousand, two hundred seventeen".