1673603 has 4 divisors (see below), whose sum is σ = 1712568. Its totient is φ = 1634640.

The previous prime is 1673591. The next prime is 1673627. The reversal of 1673603 is 3063761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1673603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1673663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19418 + ... + 19503.

It is an arithmetic number, because the mean of its divisors is an integer number (428142).

2^1673603 is an apocalyptic number.

1673603 is the 692-nd centered heptagonal number.

1673603 is a deficient number, since it is larger than the sum of its proper divisors (38965).

1673603 is an equidigital number, since it uses as much as digits as its factorization.

1673603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38964.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 1673603 is about 1293.6780897890. The cubic root of 1673603 is about 118.7273611506.

The spelling of 1673603 in words is "one million, six hundred seventy-three thousand, six hundred three".