1681874 has 8 divisors (see below), whose sum is σ = 2604288. Its totient is φ = 813780.

The previous prime is 1681873. The next prime is 1681877. The reversal of 1681874 is 4781861.

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

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1681871) 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, 13502 + ... + 13625.

It is an arithmetic number, because the mean of its divisors is an integer number (325536).

2^1681874 is an apocalyptic number.

1681874 is a deficient number, since it is larger than the sum of its proper divisors (922414).

1681874 is a wasteful number, since it uses less digits than its factorization.

1681874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27160.

The product of its digits is 10752, while the sum is 35.

The square root of 1681874 is about 1296.8708493909. The cubic root of 1681874 is about 118.9226246528.

The spelling of 1681874 in words is "one million, six hundred eighty-one thousand, eight hundred seventy-four".