673855 has 16 divisors (see below), whose sum is σ = 995904. Its totient is φ = 426240.

The previous prime is 673837. The next prime is 673879. The reversal of 673855 is 558376.

It is a happy number.

673855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673855 - 2¹⁷ = 542783 is a prime.

It is a super-2 number, since 2×673855² = 908161122050, which contains 22 as substring.

673855 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 673855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2⁶⁷³⁸⁵⁵ is an apocalyptic number.

673855 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

673855 is a deficient number, since it is larger than the sum of its proper divisors (322049).

673855 is a wasteful number, since it uses less digits than its factorization.

673855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506.

The product of its digits is 25200, while the sum is 34.

The square root of 673855 is about 820.8867156922. The cubic root of 673855 is about 87.6709040699.

The spelling of 673855 in words is "six hundred seventy-three thousand, eight hundred fifty-five".