217966083 has 8 divisors (see below), whose sum is σ = 292473168. Its totient is φ = 144384864.

The previous prime is 217966079. The next prime is 217966109. The reversal of 217966083 is 380669712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 217966083 - 2² = 217966079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (217926083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230916 + ... + 231857.

It is an arithmetic number, because the mean of its divisors is an integer number (36559146).

Almost surely, 2^217966083 is an apocalyptic number.

217966083 is a deficient number, since it is larger than the sum of its proper divisors (74507085).

217966083 is a wasteful number, since it uses less digits than its factorization.

217966083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462933.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 217966083 is about 14763.6744410055. The cubic root of 217966083 is about 601.8149516043.

The spelling of 217966083 in words is "two hundred seventeen million, nine hundred sixty-six thousand, eighty-three".