168675221 has 8 divisors (see below), whose sum is σ = 198164064. Its totient is φ = 141545520.

The previous prime is 168675209. The next prime is 168675229. The reversal of 168675221 is 122576861.

168675221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 168675221 - 2¹⁰ = 168674197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168675229) 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, 589631 + ... + 589916.

It is an arithmetic number, because the mean of its divisors is an integer number (24770508).

Almost surely, 2^168675221 is an apocalyptic number.

168675221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168675221 is a deficient number, since it is larger than the sum of its proper divisors (29488843).

168675221 is a wasteful number, since it uses less digits than its factorization.

168675221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179571.

The product of its digits is 40320, while the sum is 38.

The square root of 168675221 is about 12987.5024927813. The cubic root of 168675221 is about 552.5230866052.

The spelling of 168675221 in words is "one hundred sixty-eight million, six hundred seventy-five thousand, two hundred twenty-one".