172160770 has 8 divisors (see below), whose sum is σ = 309889404. Its totient is φ = 68864304.

The previous prime is 172160759. The next prime is 172160771. The reversal of 172160770 is 77061271.

It can be written as a sum of positive squares in 2 ways, for example, as 163405089 + 8755681 = 12783^2 + 2959^2 .

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 (172160771) 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, 8608029 + ... + 8608048.

Almost surely, 2^172160770 is an apocalyptic number.

172160770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172160770 is a deficient number, since it is larger than the sum of its proper divisors (137728634).

172160770 is a wasteful number, since it uses less digits than its factorization.

172160770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17216084.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 172160770 is about 13121.0049157829. The cubic root of 172160770 is about 556.3029959186.

The spelling of 172160770 in words is "one hundred seventy-two million, one hundred sixty thousand, seven hundred seventy".