163105663 has 12 divisors (see below), whose sum is σ = 195857472. Its totient is φ = 135293760.

The previous prime is 163105639. The next prime is 163105703. The reversal of 163105663 is 366501361.

It is a de Polignac number, because none of the positive numbers 2^k-163105663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163105603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52170 + ... + 55207.

It is an arithmetic number, because the mean of its divisors is an integer number (16321456).

Almost surely, 2^163105663 is an apocalyptic number.

163105663 is a deficient number, since it is larger than the sum of its proper divisors (32751809).

163105663 is a wasteful number, since it uses less digits than its factorization.

163105663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107422 (or 107415 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 163105663 is about 12771.2827468505. The cubic root of 163105663 is about 546.3735663991.

The spelling of 163105663 in words is "one hundred sixty-three million, one hundred five thousand, six hundred sixty-three".