168964321 has 8 divisors (see below), whose sum is σ = 182196000. Its totient is φ = 156166560.

The previous prime is 168964277. The next prime is 168964351. The reversal of 168964321 is 123469861.

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 168964321 - 2¹³ = 168956129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168964351) 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, 107671 + ... + 109228.

It is an arithmetic number, because the mean of its divisors is an integer number (22774500).

Almost surely, 2^168964321 is an apocalyptic number.

It is an amenable number.

168964321 is a deficient number, since it is larger than the sum of its proper divisors (13231679).

168964321 is a wasteful number, since it uses less digits than its factorization.

168964321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216959.

The product of its digits is 62208, while the sum is 40.

The square root of 168964321 is about 12998.6276583338. The cubic root of 168964321 is about 552.8385711036.

The spelling of 168964321 in words is "one hundred sixty-eight million, nine hundred sixty-four thousand, three hundred twenty-one".