168218560 has 56 divisors (see below), whose sum is σ = 414406080. Its totient is φ = 64963584.

The previous prime is 168218521. The next prime is 168218597. The reversal of 168218560 is 65812861.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 217 + ... + 18343.

Almost surely, 2^168218560 is an apocalyptic number.

168218560 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 168218560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207203040).

168218560 is an abundant number, since it is smaller than the sum of its proper divisors (246187520).

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

168218560 is a wasteful number, since it uses less digits than its factorization.

168218560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18173 (or 18163 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 168218560 is about 12969.9097915136. The cubic root of 168218560 is about 552.0240135181.

The spelling of 168218560 in words is "one hundred sixty-eight million, two hundred eighteen thousand, five hundred sixty".