172297693 has 2 divisors, whose sum is σ = 172297694. Its totient is φ = 172297692.

The previous prime is 172297667. The next prime is 172297751. The reversal of 172297693 is 396792271.

172297693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163788804 + 8508889 = 12798^2 + 2917^2 .

It is an emirp because it is prime and its reverse (396792271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172297693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172297633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86148846 + 86148847.

It is an arithmetic number, because the mean of its divisors is an integer number (86148847).

Almost surely, 2^172297693 is an apocalyptic number.

It is an amenable number.

172297693 is a deficient number, since it is larger than the sum of its proper divisors (1).

172297693 is an equidigital number, since it uses as much as digits as its factorization.

172297693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 172297693 is about 13126.2215812472. The cubic root of 172297693 is about 556.4504365747.

The spelling of 172297693 in words is "one hundred seventy-two million, two hundred ninety-seven thousand, six hundred ninety-three".