1681106 has 8 divisors (see below), whose sum is σ = 2881920. Its totient is φ = 720468.

The previous prime is 1681103. The next prime is 1681129. The reversal of 1681106 is 6011861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1681106² = 5652234766472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1681103) 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 3 ways as a sum of consecutive naturals, for example, 60026 + ... + 60053.

It is an arithmetic number, because the mean of its divisors is an integer number (360240).

2^1681106 is an apocalyptic number.

1681106 is a deficient number, since it is larger than the sum of its proper divisors (1200814).

1681106 is a wasteful number, since it uses less digits than its factorization.

1681106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120088.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1681106 is about 1296.5747182480. The cubic root of 1681106 is about 118.9045205457.

Adding to 1681106 its reverse (6011861), we get a palindrome (7692967).

The spelling of 1681106 in words is "one million, six hundred eighty-one thousand, one hundred six".