163630406 has 16 divisors (see below), whose sum is σ = 265415616. Its totient is φ = 75363456.

The previous prime is 163630399. The next prime is 163630421. The reversal of 163630406 is 604036361.

163630406 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49601 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (16588476).

Almost surely, 2^163630406 is an apocalyptic number.

163630406 is a deficient number, since it is larger than the sum of its proper divisors (101785210).

163630406 is a wasteful number, since it uses less digits than its factorization.

163630406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102463.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 163630406 is about 12791.8101142880. The cubic root of 163630406 is about 546.9588695794.

Adding to 163630406 its reverse (604036361), we get a palindrome (767666767).

The spelling of 163630406 in words is "one hundred sixty-three million, six hundred thirty thousand, four hundred six".