163666630 has 8 divisors (see below), whose sum is σ = 294599952. Its totient is φ = 65466648.

The previous prime is 163666603. The next prime is 163666631. The reversal of 163666630 is 36666361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163666630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163666631) 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 3 ways as a sum of consecutive naturals, for example, 8183322 + ... + 8183341.

It is an arithmetic number, because the mean of its divisors is an integer number (36824994).

Almost surely, 2^163666630 is an apocalyptic number.

163666630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163666630 is a deficient number, since it is larger than the sum of its proper divisors (130933322).

163666630 is a wasteful number, since it uses less digits than its factorization.

163666630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16366670.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 163666630 is about 12793.2259418803. The cubic root of 163666630 is about 546.9992279633. Note that the first 3 decimals are identical.

The spelling of 163666630 in words is "one hundred sixty-three million, six hundred sixty-six thousand, six hundred thirty".