672169 has 2 divisors, whose sum is σ = 672170. Its totient is φ = 672168.

The previous prime is 672167. The next prime is 672181. The reversal of 672169 is 961276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582169 + 90000 = 763^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 672169 - 2¹ = 672167 is a prime.

It is a super-2 number, since 2×672169² = 903622329122, which contains 22 as substring.

Together with 672167, it forms a pair of twin primes.

It is a Chen prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 672169.

It is not a weakly prime, because it can be changed into another prime (672167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336084 + 336085.

It is an arithmetic number, because the mean of its divisors is an integer number (336085).

2⁶⁷²¹⁶⁹ is an apocalyptic number.

It is an amenable number.

672169 is a deficient number, since it is larger than the sum of its proper divisors (1).

672169 is an equidigital number, since it uses as much as digits as its factorization.

672169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 672169 is about 819.8591342420. The cubic root of 672169 is about 87.5977248285.

It can be divided in two parts, 672 and 169, that added together give a square (841 = 29²).

The spelling of 672169 in words is "six hundred seventy-two thousand, one hundred sixty-nine".