172966069 has 4 divisors (see below), whose sum is σ = 173027596. Its totient is φ = 172904544.

The previous prime is 172966051. The next prime is 172966093. The reversal of 172966069 is 960669271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960669271 = 29363 ⋅32717.

It can be written as a sum of positive squares in 2 ways, for example, as 163584100 + 9381969 = 12790^2 + 3063^2 .

It is a cyclic number.

It is not a de Polignac number, because 172966069 - 2¹¹ = 172964021 is a prime.

It is a super-2 number, since 2×172966069² = 59834522050625522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172966099) 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, 26334 + ... + 32239.

It is an arithmetic number, because the mean of its divisors is an integer number (43256899).

Almost surely, 2^172966069 is an apocalyptic number.

It is an amenable number.

172966069 is a deficient number, since it is larger than the sum of its proper divisors (61527).

172966069 is an equidigital number, since it uses as much as digits as its factorization.

172966069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61526.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 172966069 is about 13151.6565116338. The cubic root of 172966069 is about 557.1690343888.

The spelling of 172966069 in words is "one hundred seventy-two million, nine hundred sixty-six thousand, sixty-nine".