216065088 has 42 divisors (see below), whose sum is σ = 619313214. Its totient is φ = 72021504.

The previous prime is 216065081. The next prime is 216065137. The reversal of 216065088 is 880560612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 201867264 + 14197824 = 14208^2 + 3768^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (216065081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186981 + ... + 188132.

Almost surely, 2^216065088 is an apocalyptic number.

It is an amenable number.

216065088 is an abundant number, since it is smaller than the sum of its proper divisors (403248126).

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

216065088 is a wasteful number, since it uses less digits than its factorization.

216065088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375131 (or 375118 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 216065088 is about 14699.1526286382. The cubic root of 216065088 is about 600.0602606142.

The spelling of 216065088 in words is "two hundred sixteen million, sixty-five thousand, eighty-eight".