217066134 has 32 divisors (see below), whose sum is σ = 454406400. Its totient is φ = 68995872.

The previous prime is 217066097. The next prime is 217066141. The reversal of 217066134 is 431660712.

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 15 ways as a sum of consecutive naturals, for example, 45909 + ... + 50415.

It is an arithmetic number, because the mean of its divisors is an integer number (14200200).

Almost surely, 2^217066134 is an apocalyptic number.

217066134 is an abundant number, since it is smaller than the sum of its proper divisors (237340266).

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

217066134 is a wasteful number, since it uses less digits than its factorization.

217066134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 217066134 is about 14733.1644258795. The cubic root of 217066134 is about 600.9855414050.

The spelling of 217066134 in words is "two hundred seventeen million, sixty-six thousand, one hundred thirty-four".