168970217 has 16 divisors (see below), whose sum is σ = 187821312. Its totient is φ = 151027200.

The previous prime is 168970189. The next prime is 168970223. The reversal of 168970217 is 712079861.

It is a cyclic number.

It is not a de Polignac number, because 168970217 - 2¹⁰ = 168969193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168970237) 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 15 ways as a sum of consecutive naturals, for example, 57842 + ... + 60692.

It is an arithmetic number, because the mean of its divisors is an integer number (11738832).

Almost surely, 2^168970217 is an apocalyptic number.

It is an amenable number.

168970217 is a deficient number, since it is larger than the sum of its proper divisors (18851095).

168970217 is a wasteful number, since it uses less digits than its factorization.

168970217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 168970217 is about 12998.8544495275. The cubic root of 168970217 is about 552.8450014519.

The spelling of 168970217 in words is "one hundred sixty-eight million, nine hundred seventy thousand, two hundred seventeen".