163666716 has 24 divisors (see below), whose sum is σ = 384003984. Its totient is φ = 54253440.

The previous prime is 163666673. The next prime is 163666717. The reversal of 163666716 is 617666361.

163666716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163666717) 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, 35505 + ... + 39848.

It is an arithmetic number, because the mean of its divisors is an integer number (16000166).

Almost surely, 2^163666716 is an apocalyptic number.

It is an amenable number.

163666716 is an abundant number, since it is smaller than the sum of its proper divisors (220337268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163666716 is a wasteful number, since it uses less digits than its factorization.

163666716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75541 (or 75539 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 163666716 is about 12793.2293030337. The cubic root of 163666716 is about 546.9993237717. Note that the first 3 decimals are identical.

The spelling of 163666716 in words is "one hundred sixty-three million, six hundred sixty-six thousand, seven hundred sixteen".