163065645 has 12 divisors (see below), whose sum is σ = 282647196. Its totient is φ = 86968320.

The previous prime is 163065601. The next prime is 163065691. The reversal of 163065645 is 546560361.

163065645 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 6 + 5 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21288996 + 141776649 = 4614^2 + 11907^2 .

It is not a de Polignac number, because 163065645 - 2⁷ = 163065517 is a prime.

It is a super-3 number, since 3×163065645³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1811796 + ... + 1811885.

It is an arithmetic number, because the mean of its divisors is an integer number (23553933).

Almost surely, 2^163065645 is an apocalyptic number.

163065645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163065645 is a deficient number, since it is larger than the sum of its proper divisors (119581551).

163065645 is a wasteful number, since it uses less digits than its factorization.

163065645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623692 (or 3623689 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 163065645 is about 12769.7159326275. The cubic root of 163065645 is about 546.3288784641.

The spelling of 163065645 in words is "one hundred sixty-three million, sixty-five thousand, six hundred forty-five".