672235169 has 2 divisors, whose sum is σ = 672235170. Its totient is φ = 672235168.

The previous prime is 672235159. The next prime is 672235183. The reversal of 672235169 is 961532276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529552144 + 142683025 = 23012^2 + 11945^2 .

It is a cyclic number.

It is not a de Polignac number, because 672235169 - 2⁴ = 672235153 is a prime.

It is a super-2 number, since 2×672235169² = 903800244880917122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (672235159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336117584 + 336117585.

It is an arithmetic number, because the mean of its divisors is an integer number (336117585).

Almost surely, 2^672235169 is an apocalyptic number.

It is an amenable number.

672235169 is a deficient number, since it is larger than the sum of its proper divisors (1).

672235169 is an equidigital number, since it uses as much as digits as its factorization.

672235169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 672235169 is about 25927.4983174235. The cubic root of 672235169 is about 876.0059913722.

The spelling of 672235169 in words is "six hundred seventy-two million, two hundred thirty-five thousand, one hundred sixty-nine".