1680503 has 8 divisors (see below), whose sum is σ = 1883280. Its totient is φ = 1486080.

The previous prime is 1680491. The next prime is 1680509. The reversal of 1680503 is 3050861.

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 1680503 - 2⁶ = 1680439 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 (1680509) 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, 1658 + ... + 2471.

It is an arithmetic number, because the mean of its divisors is an integer number (235410).

2^1680503 is an apocalyptic number.

1680503 is a deficient number, since it is larger than the sum of its proper divisors (202777).

1680503 is a wasteful number, since it uses less digits than its factorization.

1680503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1680503 is about 1296.3421616225. The cubic root of 1680503 is about 118.8903021283.

The spelling of 1680503 in words is "one million, six hundred eighty thousand, five hundred three".