1681223 has 8 divisors (see below), whose sum is σ = 1750656. Its totient is φ = 1612800.

The previous prime is 1681219. The next prime is 1681241. The reversal of 1681223 is 3221861.

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

It is a cyclic number.

It is not a de Polignac number, because 1681223 - 2² = 1681219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5843 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (218832).

2^1681223 is an apocalyptic number.

1681223 is a deficient number, since it is larger than the sum of its proper divisors (69433).

1681223 is a wasteful number, since it uses less digits than its factorization.

1681223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its digits is 576, while the sum is 23.

The square root of 1681223 is about 1296.6198363437. The cubic root of 1681223 is about 118.9072789492.

The spelling of 1681223 in words is "one million, six hundred eighty-one thousand, two hundred twenty-three".