1680903 has 12 divisors (see below), whose sum is σ = 2774928. Its totient is φ = 960480.

The previous prime is 1680901. The next prime is 1680907. The reversal of 1680903 is 3090861.

It is not a de Polignac number, because 1680903 - 2¹ = 1680901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13278 + ... + 13403.

It is an arithmetic number, because the mean of its divisors is an integer number (231244).

2^1680903 is an apocalyptic number.

1680903 is a deficient number, since it is larger than the sum of its proper divisors (1094025).

1680903 is a wasteful number, since it uses less digits than its factorization.

1680903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26694 (or 26691 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1680903 is about 1296.4964326985. The cubic root of 1680903 is about 118.8997342940.

The spelling of 1680903 in words is "one million, six hundred eighty thousand, nine hundred three".