672165 has 32 divisors (see below), whose sum is σ = 1290240. Its totient is φ = 330048.

The previous prime is 672151. The next prime is 672167. The reversal of 672165 is 561276.

It is not a de Polignac number, because 672165 - 2¹⁰ = 671141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1564 + ... + 1946.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁶⁷²¹⁶⁵ is an apocalyptic number.

672165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

672165 is a deficient number, since it is larger than the sum of its proper divisors (618075).

672165 is a wasteful number, since it uses less digits than its factorization.

672165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 404 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 672165 is about 819.8566947949. The cubic root of 672165 is about 87.5975510668.

Subtracting from 672165 its reverse (561276), we obtain a square (110889 = 333²).

It can be divided in two parts, 6721 and 65, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 672165 in words is "six hundred seventy-two thousand, one hundred sixty-five".