172106266 has 8 divisors (see below), whose sum is σ = 273345300. Its totient is φ = 80991168.

The previous prime is 172106257. The next prime is 172106267. The reversal of 172106266 is 662601271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 172003225 + 103041 = 13115^2 + 321^2 .

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

It is not an unprimeable number, because it can be changed into a prime (172106267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530941 + ... + 2531008.

Almost surely, 2^172106266 is an apocalyptic number.

172106266 is a deficient number, since it is larger than the sum of its proper divisors (101239034).

172106266 is a wasteful number, since it uses less digits than its factorization.

172106266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061968.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 172106266 is about 13118.9277763086. The cubic root of 172106266 is about 556.2442834745.

The spelling of 172106266 in words is "one hundred seventy-two million, one hundred six thousand, two hundred sixty-six".