217207068 has 24 divisors (see below), whose sum is σ = 545802768. Its totient is φ = 66832896.
The previous prime is 217207063. The next prime is 217207127. The reversal of 217207068 is 860702712.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (217207063) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696021 + ... + 696332.
It is an arithmetic number, because the mean of its divisors is an integer number (22741782).
Almost surely, 2217207068 is an apocalyptic number.
It is an amenable number.
217207068 is an abundant number, since it is smaller than the sum of its proper divisors (328595700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
217207068 is a wasteful number, since it uses less digits than its factorization.
217207068 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1392373 (or 1392371 counting only the distinct ones).
The product of its (nonzero) digits is 9408, while the sum is 33.
The square root of 217207068 is about 14737.9465326754. The cubic root of 217207068 is about 601.1155800719.
The spelling of 217207068 in words is "two hundred seventeen million, two hundred seven thousand, sixty-eight".
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