672865 has 8 divisors (see below), whose sum is σ = 842688. Its totient is φ = 514800.

The previous prime is 672863. The next prime is 672869. The reversal of 672865 is 568276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672865 - 2¹ = 672863 is a prime.

It is a Duffinian number.

672865 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 672865.

It is not an unprimeable number, because it can be changed into a prime (672863) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2811 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2⁶⁷²⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

672865 is a deficient number, since it is larger than the sum of its proper divisors (169823).

672865 is a wasteful number, since it uses less digits than its factorization.

672865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879.

The product of its digits is 20160, while the sum is 34.

The square root of 672865 is about 820.2834875822. The cubic root of 672865 is about 87.6279488671.

The spelling of 672865 in words is "six hundred seventy-two thousand, eight hundred sixty-five".