1682861 has 4 divisors (see below), whose sum is σ = 1685472. Its totient is φ = 1680252.

The previous prime is 1682843. The next prime is 1682867.

1682861 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1682861 - 2¹⁰ = 1681837 is a prime.

It is a super-2 number, since 2×1682861² = 5664042290642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (421368).

2^1682861 is an apocalyptic number.

It is an amenable number.

1682861 is a deficient number, since it is larger than the sum of its proper divisors (2611).

1682861 is a wasteful number, since it uses less digits than its factorization.

1682861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610.

The product of its digits is 4608, while the sum is 32.

The square root of 1682861 is about 1297.2513249174. The cubic root of 1682861 is about 118.9458831683.

The spelling of 1682861 in words is "one million, six hundred eighty-two thousand, eight hundred sixty-one".