1673003 has 4 divisors (see below), whose sum is σ = 1675608. Its totient is φ = 1670400.

The previous prime is 1672999. The next prime is 1673011. The reversal of 1673003 is 3003761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1673003 - 2² = 1672999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (418902).

2^1673003 is an apocalyptic number.

1673003 is a deficient number, since it is larger than the sum of its proper divisors (2605).

1673003 is a wasteful number, since it uses less digits than its factorization.

1673003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 1673003 is about 1293.4461720536. The cubic root of 1673003 is about 118.7131712200.

Adding to 1673003 its reverse (3003761), we get a palindrome (4676764).

It can be divided in two parts, 167 and 3003, that multiplied together give a triangular number (501501 = T₁₀₀₁).

The spelling of 1673003 in words is "one million, six hundred seventy-three thousand, three".