673807 has 4 divisors (see below), whose sum is σ = 692056. Its totient is φ = 655560.

The previous prime is 673801. The next prime is 673811. The reversal of 673807 is 708376.

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 673807 - 2¹⁹ = 149519 is a prime.

It is a Duffinian number.

673807 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673801) 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, 9069 + ... + 9142.

It is an arithmetic number, because the mean of its divisors is an integer number (173014).

2⁶⁷³⁸⁰⁷ is an apocalyptic number.

673807 is a deficient number, since it is larger than the sum of its proper divisors (18249).

673807 is a wasteful number, since it uses less digits than its factorization.

673807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18248.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 673807 is about 820.8574784943. The cubic root of 673807 is about 87.6688223642.

The spelling of 673807 in words is "six hundred seventy-three thousand, eight hundred seven".