163668105 has 48 divisors (see below), whose sum is σ = 297513216. Its totient is φ = 83139840.

The previous prime is 163668103. The next prime is 163668119. The reversal of 163668105 is 501866361.

It is a happy number.

163668105 is a `hidden beast` number, since 1 + 636 + 6 + 8 + 10 + 5 = 666.

It is not a de Polignac number, because 163668105 - 2¹ = 163668103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163668105.

It is not an unprimeable number, because it can be changed into a prime (163668101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78304 + ... + 80366.

It is an arithmetic number, because the mean of its divisors is an integer number (6198192).

Almost surely, 2^163668105 is an apocalyptic number.

163668105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163668105 is a deficient number, since it is larger than the sum of its proper divisors (133845111).

163668105 is a wasteful number, since it uses less digits than its factorization.

163668105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 163668105 is about 12793.2835894465. The cubic root of 163668105 is about 547.0008711845. Note that the first 3 decimals are identical.

The spelling of 163668105 in words is "one hundred sixty-three million, six hundred sixty-eight thousand, one hundred five".