172665086 has 16 divisors (see below), whose sum is σ = 286122240. Its totient is φ = 77489880.

The previous prime is 172665083. The next prime is 172665091. The reversal of 172665086 is 680566271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172665083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47936 + ... + 51411.

It is an arithmetic number, because the mean of its divisors is an integer number (17882640).

Almost surely, 2^172665086 is an apocalyptic number.

172665086 is a deficient number, since it is larger than the sum of its proper divisors (113457154).

172665086 is a wasteful number, since it uses less digits than its factorization.

172665086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99439.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 172665086 is about 13140.2087502444. The cubic root of 172665086 is about 556.8456650429.

The spelling of 172665086 in words is "one hundred seventy-two million, six hundred sixty-five thousand, eighty-six".