672839 has 4 divisors (see below), whose sum is σ = 674520. Its totient is φ = 671160.

The previous prime is 672827. The next prime is 672863. The reversal of 672839 is 938276.

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

It is a cyclic number.

It is not a de Polignac number, because 672839 - 2⁴ = 672823 is a prime.

It is a d-powerful number, because it can be written as 6 + 7⁵ + 8⁵ + 2¹⁵ + 3¹² + 9⁵ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672799 and 672808.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672839.

It is not an unprimeable number, because it can be changed into a prime (672869) 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, 149 + ... + 1169.

It is an arithmetic number, because the mean of its divisors is an integer number (168630).

2⁶⁷²⁸³⁹ is an apocalyptic number.

672839 is a deficient number, since it is larger than the sum of its proper divisors (1681).

672839 is a wasteful number, since it uses less digits than its factorization.

672839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 18144, while the sum is 35.

The square root of 672839 is about 820.2676392495. The cubic root of 672839 is about 87.6268201830.

The spelling of 672839 in words is "six hundred seventy-two thousand, eight hundred thirty-nine".