673864 has 16 divisors (see below), whose sum is σ = 1275120. Its totient is φ = 333840.

The previous prime is 673837. The next prime is 673879. The reversal of 673864 is 468376.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (79695).

2⁶⁷³⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

673864 is a deficient number, since it is larger than the sum of its proper divisors (601256).

673864 is a wasteful number, since it uses less digits than its factorization.

673864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 776 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 673864 is about 820.8921975509. The cubic root of 673864 is about 87.6712943787.

The spelling of 673864 in words is "six hundred seventy-three thousand, eight hundred sixty-four".