168255663 has 8 divisors (see below), whose sum is σ = 225504048. Its totient is φ = 111588864.

The previous prime is 168255611. The next prime is 168255683. The reversal of 168255663 is 366552861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168255663 - 2⁶ = 168255599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168255683) 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 in 7 ways as a sum of consecutive naturals, for example, 144720 + ... + 145877.

It is an arithmetic number, because the mean of its divisors is an integer number (28188006).

Almost surely, 2^168255663 is an apocalyptic number.

168255663 is a deficient number, since it is larger than the sum of its proper divisors (57248385).

168255663 is a wasteful number, since it uses less digits than its factorization.

168255663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290793.

The product of its digits is 259200, while the sum is 42.

The square root of 168255663 is about 12971.3400618440. The cubic root of 168255663 is about 552.0645961215.

The spelling of 168255663 in words is "one hundred sixty-eight million, two hundred fifty-five thousand, six hundred sixty-three".