168321006 has 96 divisors (see below), whose sum is σ = 436220928. Its totient is φ = 45904320.

The previous prime is 168321001. The next prime is 168321047. The reversal of 168321006 is 600123861.

It is a super-2 number, since 2×168321006² = 56663922121704072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168321001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254316 + ... + 254976.

It is an arithmetic number, because the mean of its divisors is an integer number (4543968).

Almost surely, 2^168321006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168321006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218110464).

168321006 is an abundant number, since it is smaller than the sum of its proper divisors (267899922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168321006 is a wasteful number, since it uses less digits than its factorization.

168321006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 168321006 is about 12973.8585625095. The cubic root of 168321006 is about 552.1360526329.

Adding to 168321006 its reverse (600123861), we get a palindrome (768444867).

The spelling of 168321006 in words is "one hundred sixty-eight million, three hundred twenty-one thousand, six".