1679744 has 32 divisors (see below), whose sum is σ = 3653640. Its totient is φ = 762880.

The previous prime is 1679723. The next prime is 1679773. The reversal of 1679744 is 4479761.

It is a tau number, because it is divible by the number of its divisors (32).

It is a d-powerful number, because it can be written as 1 + 6⁸ + 7² + 9 + 7² + 4 + 4² .

It is a junction number, because it is equal to n+sod(n) for n = 1679698 and 1679707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812 + ... + 2004.

2^1679744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1679744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1826820).

1679744 is an abundant number, since it is smaller than the sum of its proper divisors (1973896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679744 is a wasteful number, since it uses less digits than its factorization.

1679744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1206 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 1679744 is about 1296.0493817752. The cubic root of 1679744 is about 118.8724004786.

The spelling of 1679744 in words is "one million, six hundred seventy-nine thousand, seven hundred forty-four".