217363068 has 72 divisors (see below), whose sum is σ = 610268400. Its totient is φ = 66875328.

The previous prime is 217363051. The next prime is 217363079. The reversal of 217363068 is 860363712.

It is a happy number.

217363068 is a `hidden beast` number, since 2 + 17 + 3 + 630 + 6 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12298 + ... + 24206.

It is an arithmetic number, because the mean of its divisors is an integer number (8475950).

Almost surely, 2^217363068 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 217363068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305134200).

217363068 is an abundant number, since it is smaller than the sum of its proper divisors (392905332).

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

217363068 is a wasteful number, since it uses less digits than its factorization.

217363068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948 (or 11927 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 217363068 is about 14743.2380432522. The cubic root of 217363068 is about 601.2594544411.

The spelling of 217363068 in words is "two hundred seventeen million, three hundred sixty-three thousand, sixty-eight".