1679798 has 4 divisors (see below), whose sum is σ = 2519700. Its totient is φ = 839898.

The previous prime is 1679779. The next prime is 1679801. The reversal of 1679798 is 8979761.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 419948 + ... + 419951.

It is an arithmetic number, because the mean of its divisors is an integer number (629925).

2^1679798 is an apocalyptic number.

1679798 is a deficient number, since it is larger than the sum of its proper divisors (839902).

1679798 is an equidigital number, since it uses as much as digits as its factorization.

1679798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839901.

The product of its digits is 190512, while the sum is 47.

The square root of 1679798 is about 1296.0702141474. The cubic root of 1679798 is about 118.8736742919.

The spelling of 1679798 in words is "one million, six hundred seventy-nine thousand, seven hundred ninety-eight".