167665223 has 12 divisors (see below), whose sum is σ = 185445624. Its totient is φ = 151470000.

The previous prime is 167665189. The next prime is 167665243. The reversal of 167665223 is 322566761.

It is not a de Polignac number, because 167665223 - 2¹² = 167661127 is a prime.

It is a super-3 number, since 3×167665223³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167665243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15473 + ... + 23973.

It is an arithmetic number, because the mean of its divisors is an integer number (15453802).

Almost surely, 2^167665223 is an apocalyptic number.

167665223 is a deficient number, since it is larger than the sum of its proper divisors (17780401).

167665223 is a wasteful number, since it uses less digits than its factorization.

167665223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8686 (or 8675 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 167665223 is about 12948.5606536016. The cubic root of 167665223 is about 551.4180739479.

The spelling of 167665223 in words is "one hundred sixty-seven million, six hundred sixty-five thousand, two hundred twenty-three".