1679689 has 8 divisors (see below), whose sum is σ = 1882368. Its totient is φ = 1485360.

The previous prime is 1679687. The next prime is 1679693. The reversal of 1679689 is 9869761.

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 1679689 - 2¹ = 1679687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1679681) 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, 1657 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (235296).

2^1679689 is an apocalyptic number.

It is an amenable number.

1679689 is a deficient number, since it is larger than the sum of its proper divisors (202679).

1679689 is a wasteful number, since it uses less digits than its factorization.

1679689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175.

The product of its digits is 163296, while the sum is 46.

The square root of 1679689 is about 1296.0281632742. The cubic root of 1679689 is about 118.8711030481.

The spelling of 1679689 in words is "one million, six hundred seventy-nine thousand, six hundred eighty-nine".