It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1679347 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 6.
It is a zygodrome in base 2.
21679347 is an apocalyptic number.
1679347 is an equidigital number, since it uses as much as digits as its factorization.
1679347 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3332.
The square root of 1679347 is about 1295.8962149802. The cubic root of 1679347 is about 118.8630347536.
The spelling of 1679347 in words is "one million, six hundred seventy-nine thousand, three hundred forty-seven".