672170269 has 2 divisors, whose sum is σ = 672170270. Its totient is φ = 672170268.

The previous prime is 672170267. The next prime is 672170297. The reversal of 672170269 is 962071276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486202500 + 185967769 = 22050^2 + 13637^2 .

It is a cyclic number.

It is not a de Polignac number, because 672170269 - 2¹ = 672170267 is a prime.

It is a super-2 number, since 2×672170269² = 903625741055064722, which contains 22 as substring.

Together with 672170267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672170263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336085134 + 336085135.

It is an arithmetic number, because the mean of its divisors is an integer number (336085135).

Almost surely, 2^672170269 is an apocalyptic number.

It is an amenable number.

672170269 is a deficient number, since it is larger than the sum of its proper divisors (1).

672170269 is an equidigital number, since it uses as much as digits as its factorization.

672170269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 672170269 is about 25926.2467202640. The cubic root of 672170269 is about 875.9777995423.

The spelling of 672170269 in words is "six hundred seventy-two million, one hundred seventy thousand, two hundred sixty-nine".