1680479 has 8 divisors (see below), whose sum is σ = 1751040. Its totient is φ = 1611000.

The previous prime is 1680461. The next prime is 1680491. The reversal of 1680479 is 9740861.

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 1680479 - 2¹² = 1676383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502 + ... + 4860.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

2^1680479 is an apocalyptic number.

1680479 is a deficient number, since it is larger than the sum of its proper divisors (70561).

1680479 is a wasteful number, since it uses less digits than its factorization.

1680479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1680479 is about 1296.3329047741. The cubic root of 1680479 is about 118.8897361508.

The spelling of 1680479 in words is "one million, six hundred eighty thousand, four hundred seventy-nine".