217482064 has 20 divisors (see below), whose sum is σ = 422981856. Its totient is φ = 108325472.

The previous prime is 217482061. The next prime is 217482073. The reversal of 217482064 is 460284712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217482061) 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 3 ways as a sum of consecutive naturals, for example, 21634 + ... + 30049.

Almost surely, 2^217482064 is an apocalyptic number.

It is an amenable number.

217482064 is a deficient number, since it is larger than the sum of its proper divisors (205499792).

217482064 is a wasteful number, since it uses less digits than its factorization.

217482064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51954 (or 51948 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 217482064 is about 14747.2731038657. The cubic root of 217482064 is about 601.3691547969.

The spelling of 217482064 in words is "two hundred seventeen million, four hundred eighty-two thousand, sixty-four".