1679889 has 8 divisors (see below), whose sum is σ = 2371680. Its totient is φ = 1054016.

The previous prime is 1679863. The next prime is 1679903. The reversal of 1679889 is 9889761.

It is a happy number.

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 1679889 - 2⁵ = 1679857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1679849) 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, 16419 + ... + 16520.

It is an arithmetic number, because the mean of its divisors is an integer number (296460).

2^1679889 is an apocalyptic number.

It is an amenable number.

1679889 is a deficient number, since it is larger than the sum of its proper divisors (691791).

1679889 is a wasteful number, since it uses less digits than its factorization.

1679889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32959.

The product of its digits is 217728, while the sum is 48.

The square root of 1679889 is about 1296.1053197947. The cubic root of 1679889 is about 118.8758208415.

The spelling of 1679889 in words is "one million, six hundred seventy-nine thousand, eight hundred eighty-nine".