673887 has 4 divisors (see below), whose sum is σ = 898520. Its totient is φ = 449256.

The previous prime is 673879. The next prime is 673891. The reversal of 673887 is 788376.

673887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 673887 - 2³ = 673879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673817) 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, 112312 + ... + 112317.

It is an arithmetic number, because the mean of its divisors is an integer number (224630).

2⁶⁷³⁸⁸⁷ is an apocalyptic number.

673887 is a deficient number, since it is larger than the sum of its proper divisors (224633).

673887 is a wasteful number, since it uses less digits than its factorization.

673887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224632.

The product of its digits is 56448, while the sum is 39.

The square root of 673887 is about 820.9062065790. The cubic root of 673887 is about 87.6722918188.

The spelling of 673887 in words is "six hundred seventy-three thousand, eight hundred eighty-seven".