172098085 has 8 divisors (see below), whose sum is σ = 206605080. Its totient is φ = 137620224.

The previous prime is 172098077. The next prime is 172098119. The reversal of 172098085 is 580890271.

It can be written as a sum of positive squares in 4 ways, for example, as 10452289 + 161645796 = 3233^2 + 12714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172098085 - 2³ = 172098077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9049 + ... + 20641.

It is an arithmetic number, because the mean of its divisors is an integer number (25825635).

Almost surely, 2^172098085 is an apocalyptic number.

It is an amenable number.

172098085 is a deficient number, since it is larger than the sum of its proper divisors (34506995).

172098085 is a wasteful number, since it uses less digits than its factorization.

172098085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 172098085 is about 13118.6159712067. The cubic root of 172098085 is about 556.2354697210.

The spelling of 172098085 in words is "one hundred seventy-two million, ninety-eight thousand, eighty-five".