321716964 has 24 divisors (see below), whose sum is σ = 759719520. Its totient is φ = 105946624.

The previous prime is 321716951. The next prime is 321717001. The reversal of 321716964 is 469617123.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160509 + ... + 162500.

It is an arithmetic number, because the mean of its divisors is an integer number (31654980).

Almost surely, 2^321716964 is an apocalyptic number.

It is an amenable number.

321716964 is an abundant number, since it is smaller than the sum of its proper divisors (438002556).

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

321716964 is a wasteful number, since it uses less digits than its factorization.

321716964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323099 (or 323097 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 321716964 is about 17936.4702213117. The cubic root of 321716964 is about 685.2115168992.

The spelling of 321716964 in words is "three hundred twenty-one million, seven hundred sixteen thousand, nine hundred sixty-four".