672045 has 16 divisors (see below), whose sum is σ = 1173312. Its totient is φ = 325760.

The previous prime is 672043. The next prime is 672059. The reversal of 672045 is 540276.

It is a happy number.

It is not a de Polignac number, because 672045 - 2¹ = 672043 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

672045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (73332).

2⁶⁷²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

672045 is a deficient number, since it is larger than the sum of its proper divisors (501267).

672045 is a wasteful number, since it uses less digits than its factorization.

672045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 672045 is about 819.7835080068. The cubic root of 672045 is about 87.5923378966.

Subtracting from 672045 its reverse (540276), we obtain a square (131769 = 363²).

It can be divided in two parts, 67 and 2045, that added together give a palindrome (2112).

The spelling of 672045 in words is "six hundred seventy-two thousand, forty-five".