1689003 has 12 divisors (see below), whose sum is σ = 2476968. Its totient is φ = 1108800.

The previous prime is 1688987. The next prime is 1689031. The reversal of 1689003 is 3009861.

It is not a de Polignac number, because 1689003 - 2⁴ = 1688987 is a prime.

It is a super-2 number, since 2×1689003² = 5705462268018, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

1689003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1689053) 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, 798 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (206414).

2^1689003 is an apocalyptic number.

1689003 is a deficient number, since it is larger than the sum of its proper divisors (787965).

1689003 is a wasteful number, since it uses less digits than its factorization.

1689003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874 (or 2871 counting only the distinct ones).

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

The square root of 1689003 is about 1299.6164818899. The cubic root of 1689003 is about 119.0904145390.

The spelling of 1689003 in words is "one million, six hundred eighty-nine thousand, three".