1679746 has 4 divisors (see below), whose sum is σ = 2519622. Its totient is φ = 839872.

The previous prime is 1679723. The next prime is 1679773. The reversal of 1679746 is 6479761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6479761 = 443 ⋅14627.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 18225 = 1289^2 + 135^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 1 + 6 + 7² + 9 + 7² + 4² + 6⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 1679699 and 1679708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419935 + ... + 419938.

2^1679746 is an apocalyptic number.

1679746 is a deficient number, since it is larger than the sum of its proper divisors (839876).

1679746 is an equidigital number, since it uses as much as digits as its factorization.

1679746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839875.

The product of its digits is 63504, while the sum is 40.

The square root of 1679746 is about 1296.0501533506. The cubic root of 1679746 is about 118.8724476574.

The spelling of 1679746 in words is "one million, six hundred seventy-nine thousand, seven hundred forty-six".