163212660 has 144 divisors (see below), whose sum is σ = 561375360. Its totient is φ = 38050560.

The previous prime is 163212659. The next prime is 163212683. The reversal of 163212660 is 66212361.

163212660 is a `hidden beast` number, since 1 + 632 + 1 + 26 + 6 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42625 + ... + 46295.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^163212660 is an apocalyptic number.

163212660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163212660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280687680).

163212660 is an abundant number, since it is smaller than the sum of its proper divisors (398162700).

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

163212660 is a wasteful number, since it uses less digits than its factorization.

163212660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 163212660 is about 12775.4710284983. The cubic root of 163212660 is about 546.4930136188.

It can be divided in two parts, 16321 and 2660, that added together give a palindrome (18981).

The spelling of 163212660 in words is "one hundred sixty-three million, two hundred twelve thousand, six hundred sixty".