166082217 has 24 divisors (see below), whose sum is σ = 266486400. Its totient is φ = 91629216.

The previous prime is 166082207. The next prime is 166082219. The reversal of 166082217 is 712280661.

It is not a de Polignac number, because 166082217 - 2⁴ = 166082201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166082219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15217 + ... + 23742.

It is an arithmetic number, because the mean of its divisors is an integer number (11103600).

Almost surely, 2^166082217 is an apocalyptic number.

It is an amenable number.

166082217 is a deficient number, since it is larger than the sum of its proper divisors (100404183).

166082217 is a wasteful number, since it uses less digits than its factorization.

166082217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39005 (or 38998 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 166082217 is about 12887.2889701442. The cubic root of 166082217 is about 549.6771846695.

The spelling of 166082217 in words is "one hundred sixty-six million, eighty-two thousand, two hundred seventeen".