673885 has 4 divisors (see below), whose sum is σ = 808668. Its totient is φ = 539104.

The previous prime is 673879. The next prime is 673891. The reversal of 673885 is 588376.

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

It is an interprime number because it is at equal distance from previous prime (673879) and next prime (673891).

It can be written as a sum of positive squares in 2 ways, for example, as 298116 + 375769 = 546^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 673885 - 2¹¹ = 671837 is a prime.

It is a Duffinian number.

673885 is a lucky number.

It is a congruent number.

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, 67384 + ... + 67393.

It is an arithmetic number, because the mean of its divisors is an integer number (202167).

2⁶⁷³⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

673885 is a deficient number, since it is larger than the sum of its proper divisors (134783).

673885 is a wasteful number, since it uses less digits than its factorization.

673885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134782.

The product of its digits is 40320, while the sum is 37.

The square root of 673885 is about 820.9049884122. The cubic root of 673885 is about 87.6722050857.

The spelling of 673885 in words is "six hundred seventy-three thousand, eight hundred eighty-five".