672838 has 4 divisors (see below), whose sum is σ = 1009260. Its totient is φ = 336418.

The previous prime is 672827. The next prime is 672863. The reversal of 672838 is 838276.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

672838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168208 + ... + 168211.

It is an arithmetic number, because the mean of its divisors is an integer number (252315).

2⁶⁷²⁸³⁸ is an apocalyptic number.

672838 is a deficient number, since it is larger than the sum of its proper divisors (336422).

672838 is a wasteful number, since it uses less digits than its factorization.

672838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336421.

The product of its digits is 16128, while the sum is 34.

The square root of 672838 is about 820.2670296922. The cubic root of 672838 is about 87.6267767715.

The spelling of 672838 in words is "six hundred seventy-two thousand, eight hundred thirty-eight".