217668104 has 32 divisors (see below), whose sum is σ = 430564800. Its totient is φ = 102876480.

The previous prime is 217668103. The next prime is 217668127. The reversal of 217668104 is 401866712.

It is not an unprimeable number, because it can be changed into a prime (217668103) 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, 80909 + ... + 83555.

It is an arithmetic number, because the mean of its divisors is an integer number (13455150).

Almost surely, 2^217668104 is an apocalyptic number.

It is an amenable number.

217668104 is a deficient number, since it is larger than the sum of its proper divisors (212896696).

217668104 is a wasteful number, since it uses less digits than its factorization.

217668104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3209 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 217668104 is about 14753.5793623107. The cubic root of 217668104 is about 601.5405817019.

The spelling of 217668104 in words is "two hundred seventeen million, six hundred sixty-eight thousand, one hundred four".