172764847 has 2 divisors, whose sum is σ = 172764848. Its totient is φ = 172764846.

The previous prime is 172764827. The next prime is 172764859. The reversal of 172764847 is 748467271.

It is a strong prime.

It is an emirp because it is prime and its reverse (748467271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172764847 - 2⁷ = 172764719 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172764797 and 172764806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172764817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86382423 + 86382424.

It is an arithmetic number, because the mean of its divisors is an integer number (86382424).

Almost surely, 2^172764847 is an apocalyptic number.

172764847 is a deficient number, since it is larger than the sum of its proper divisors (1).

172764847 is an equidigital number, since it uses as much as digits as its factorization.

172764847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 526848, while the sum is 46.

The square root of 172764847 is about 13144.0042224582. The cubic root of 172764847 is about 556.9528876174.

The spelling of 172764847 in words is "one hundred seventy-two million, seven hundred sixty-four thousand, eight hundred forty-seven".