172206607 has 4 divisors (see below), whose sum is σ = 172497600. Its totient is φ = 171915616.

The previous prime is 172206563. The next prime is 172206613. The reversal of 172206607 is 706602271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172206607 - 2¹¹ = 172204559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172206647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144607 + ... + 145792.

It is an arithmetic number, because the mean of its divisors is an integer number (43124400).

Almost surely, 2^172206607 is an apocalyptic number.

172206607 is a deficient number, since it is larger than the sum of its proper divisors (290993).

172206607 is an equidigital number, since it uses as much as digits as its factorization.

172206607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290992.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 172206607 is about 13122.7515026385. The cubic root of 172206607 is about 556.3523625615.

Adding to 172206607 its reverse (706602271), we get a palindrome (878808878).

The spelling of 172206607 in words is "one hundred seventy-two million, two hundred six thousand, six hundred seven".