173872669 has 2 divisors, whose sum is σ = 173872670. Its totient is φ = 173872668.

The previous prime is 173872649. The next prime is 173872679. The reversal of 173872669 is 966278371.

It is a happy number.

173872669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172607044 + 1265625 = 13138^2 + 1125^2 .

It is a cyclic number.

It is not a de Polignac number, because 173872669 - 2⁷ = 173872541 is a prime.

It is a super-2 number, since 2×173872669² = 60463410050367122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173872619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86936334 + 86936335.

It is an arithmetic number, because the mean of its divisors is an integer number (86936335).

Almost surely, 2^173872669 is an apocalyptic number.

It is an amenable number.

173872669 is a deficient number, since it is larger than the sum of its proper divisors (1).

173872669 is an equidigital number, since it uses as much as digits as its factorization.

173872669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 173872669 is about 13186.0786058631. The cubic root of 173872669 is about 558.1408039132.

The spelling of 173872669 in words is "one hundred seventy-three million, eight hundred seventy-two thousand, six hundred sixty-nine".