172716697 has 2 divisors, whose sum is σ = 172716698. Its totient is φ = 172716696.

The previous prime is 172716679. The next prime is 172716737. The reversal of 172716697 is 796617271.

172716697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (172716679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172029456 + 687241 = 13116^2 + 829^2 .

It is an emirp because it is prime and its reverse (796617271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172716697 - 2⁷ = 172716569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172716647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86358348 + 86358349.

It is an arithmetic number, because the mean of its divisors is an integer number (86358349).

Almost surely, 2^172716697 is an apocalyptic number.

It is an amenable number.

172716697 is a deficient number, since it is larger than the sum of its proper divisors (1).

172716697 is an equidigital number, since it uses as much as digits as its factorization.

172716697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 46.

The square root of 172716697 is about 13142.1724612029. The cubic root of 172716697 is about 556.9011414168.

The spelling of 172716697 in words is "one hundred seventy-two million, seven hundred sixteen thousand, six hundred ninety-seven".