163660105 has 16 divisors (see below), whose sum is σ = 237651840. Its totient is φ = 105622272.

The previous prime is 163660093. The next prime is 163660109. The reversal of 163660105 is 501066361.

It is not a de Polignac number, because 163660105 - 2⁵ = 163660073 is a prime.

It is a super-2 number, since 2×163660105² = 53569259937222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163660109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136935 + ... + 138124.

It is an arithmetic number, because the mean of its divisors is an integer number (14853240).

Almost surely, 2^163660105 is an apocalyptic number.

It is an amenable number.

163660105 is a deficient number, since it is larger than the sum of its proper divisors (73991735).

163660105 is a wasteful number, since it uses less digits than its factorization.

163660105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275088.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 163660105 is about 12792.9709215647. The cubic root of 163660105 is about 546.9919586798.

It can be divided in two parts, 163 and 660105, that multiplied together give a triangular number (107597115 = T₁₄₆₆₉).

The spelling of 163660105 in words is "one hundred sixty-three million, six hundred sixty thousand, one hundred five".