163660224 has 448 divisors, whose sum is σ = 614476800. Its totient is φ = 37158912.

The previous prime is 163660177. The next prime is 163660229. The reversal of 163660224 is 422066361.

It is a tau number, because it is divible by the number of its divisors (448).

It is a junction number, because it is equal to n+sod(n) for n = 163660191 and 163660200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163660229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5643442 + ... + 5643470.

It is an arithmetic number, because the mean of its divisors is an integer number (1371600).

Almost surely, 2^163660224 is an apocalyptic number.

163660224 is a gapful number since it is divisible by the number (14) 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 163660224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307238400).

163660224 is an abundant number, since it is smaller than the sum of its proper divisors (450816576).

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

163660224 is a wasteful number, since it uses less digits than its factorization.

163660224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 163660224 is about 12792.9755725554. The cubic root of 163660224 is about 546.9920912555.

The spelling of 163660224 in words is "one hundred sixty-three million, six hundred sixty thousand, two hundred twenty-four".