172623263 has 2 divisors, whose sum is σ = 172623264. Its totient is φ = 172623262.

The previous prime is 172623259. The next prime is 172623277. The reversal of 172623263 is 362326271.

It is a weak prime.

It is an emirp because it is prime and its reverse (362326271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172623263 - 2² = 172623259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172623233) 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 as a sum of consecutive naturals, namely, 86311631 + 86311632.

It is an arithmetic number, because the mean of its divisors is an integer number (86311632).

Almost surely, 2^172623263 is an apocalyptic number.

172623263 is a deficient number, since it is larger than the sum of its proper divisors (1).

172623263 is an equidigital number, since it uses as much as digits as its factorization.

172623263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 172623263 is about 13138.6172407906. The cubic root of 172623263 is about 556.8007016257.

The spelling of 172623263 in words is "one hundred seventy-two million, six hundred twenty-three thousand, two hundred sixty-three".