172967623 has 2 divisors, whose sum is σ = 172967624. Its totient is φ = 172967622.

The previous prime is 172967617. The next prime is 172967633. The reversal of 172967623 is 326769271.

It is a weak prime.

It is an emirp because it is prime and its reverse (326769271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172967623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172967623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172967603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86483811 + 86483812.

It is an arithmetic number, because the mean of its divisors is an integer number (86483812).

Almost surely, 2^172967623 is an apocalyptic number.

172967623 is a deficient number, since it is larger than the sum of its proper divisors (1).

172967623 is an equidigital number, since it uses as much as digits as its factorization.

172967623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 172967623 is about 13151.7155915112. The cubic root of 172967623 is about 557.1707029976.

The spelling of 172967623 in words is "one hundred seventy-two million, nine hundred sixty-seven thousand, six hundred twenty-three".