1679305 has 8 divisors (see below), whose sum is σ = 2053512. Its totient is φ = 1317888.

The previous prime is 1679297. The next prime is 1679323. The reversal of 1679305 is 5039761.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 1471369 = 456^2 + 1213^2 .

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 1679305 - 2³ = 1679297 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2904 + ... + 3433.

It is an arithmetic number, because the mean of its divisors is an integer number (256689).

2^1679305 is an apocalyptic number.

It is an amenable number.

1679305 is a deficient number, since it is larger than the sum of its proper divisors (374207).

1679305 is an equidigital number, since it uses as much as digits as its factorization.

1679305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1679305 is about 1295.8800098775. The cubic root of 1679305 is about 118.8620438349.

The spelling of 1679305 in words is "one million, six hundred seventy-nine thousand, three hundred five".