672144 has 80 divisors (see below), whose sum is σ = 2023680. Its totient is φ = 190080.

The previous prime is 672143. The next prime is 672151. The reversal of 672144 is 441276.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (672143) 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, 9999 + ... + 10065.

It is an arithmetic number, because the mean of its divisors is an integer number (25296).

2⁶⁷²¹⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011840).

672144 is an abundant number, since it is smaller than the sum of its proper divisors (1351536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672144 is a wasteful number, since it uses less digits than its factorization.

672144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 102 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 672144 is about 819.8438875786. The cubic root of 672144 is about 87.5966388068.

It can be divided in two parts, 67 and 2144, that added together give a triangular number (2211 = T₆₆).

The spelling of 672144 in words is "six hundred seventy-two thousand, one hundred forty-four".