1689411 has 8 divisors (see below), whose sum is σ = 2258704. Its totient is φ = 1123200.

The previous prime is 1689397. The next prime is 1689431. The reversal of 1689411 is 1149861.

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

It is not a de Polignac number, because 1689411 - 2⁵ = 1689379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689431) 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 7 ways as a sum of consecutive naturals, for example, 1335 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (282338).

2^1689411 is an apocalyptic number.

1689411 is a deficient number, since it is larger than the sum of its proper divisors (569293).

1689411 is an equidigital number, since it uses as much as digits as its factorization.

1689411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541.

The product of its digits is 1728, while the sum is 30.

The square root of 1689411 is about 1299.7734417967. The cubic root of 1689411 is about 119.1000030314.

The spelling of 1689411 in words is "one million, six hundred eighty-nine thousand, four hundred eleven".