217066014 has 96 divisors (see below), whose sum is σ = 536256000. Its totient is φ = 65031120.

The previous prime is 217066007. The next prime is 217066043. The reversal of 217066014 is 410660712.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 908107 + ... + 908345.

It is an arithmetic number, because the mean of its divisors is an integer number (5586000).

Almost surely, 2^217066014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217066014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268128000).

217066014 is an abundant number, since it is smaller than the sum of its proper divisors (319189986).

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

217066014 is a wasteful number, since it uses less digits than its factorization.

217066014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 217066014 is about 14733.1603534340. The cubic root of 217066014 is about 600.9854306580.

The spelling of 217066014 in words is "two hundred seventeen million, sixty-six thousand, fourteen".