172663 has 2 divisors, whose sum is σ = 172664. Its totient is φ = 172662.

The previous prime is 172657. The next prime is 172673. The reversal of 172663 is 366271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172663 - 2¹³ = 164471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86331 + 86332.

It is an arithmetic number, because the mean of its divisors is an integer number (86332).

2¹⁷²⁶⁶³ is an apocalyptic number.

172663 is a deficient number, since it is larger than the sum of its proper divisors (1).

172663 is an equidigital number, since it uses as much as digits as its factorization.

172663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 172663 is about 415.5273757528. The cubic root of 172663 is about 55.6843422581.

The spelling of 172663 in words is "one hundred seventy-two thousand, six hundred sixty-three".