216267568 has 60 divisors (see below), whose sum is σ = 466307208. Its totient is φ = 96363520.

The previous prime is 216267559. The next prime is 216267577. The reversal of 216267568 is 865762612.

It is an interprime number because it is at equal distance from previous prime (216267559) and next prime (216267577).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612480 + ... + 612832.

Almost surely, 2^216267568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216267568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233153604).

216267568 is an abundant number, since it is smaller than the sum of its proper divisors (250039640).

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

216267568 is a wasteful number, since it uses less digits than its factorization.

216267568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 425 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 216267568 is about 14706.0384876417. The cubic root of 216267568 is about 600.2476459199.

The spelling of 216267568 in words is "two hundred sixteen million, two hundred sixty-seven thousand, five hundred sixty-eight".