673783 has 4 divisors (see below), whose sum is σ = 735048. Its totient is φ = 612520.

The previous prime is 673781. The next prime is 673787. The reversal of 673783 is 387376.

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

It is a cyclic number.

It is not a de Polignac number, because 673783 - 2¹ = 673781 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 (673781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30616 + ... + 30637.

It is an arithmetic number, because the mean of its divisors is an integer number (183762).

2⁶⁷³⁷⁸³ is an apocalyptic number.

673783 is a deficient number, since it is larger than the sum of its proper divisors (61265).

673783 is a wasteful number, since it uses less digits than its factorization.

673783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61264.

The product of its digits is 21168, while the sum is 34.

The square root of 673783 is about 820.8428595048. The cubic root of 673783 is about 87.6677814743.

The spelling of 673783 in words is "six hundred seventy-three thousand, seven hundred eighty-three".