321053664 has 48 divisors (see below), whose sum is σ = 871834320. Its totient is φ = 103326720.

The previous prime is 321053651. The next prime is 321053671. The reversal of 321053664 is 466350123.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54877 + ... + 60444.

It is an arithmetic number, because the mean of its divisors is an integer number (18163215).

Almost surely, 2^321053664 is an apocalyptic number.

It is an amenable number.

321053664 is an abundant number, since it is smaller than the sum of its proper divisors (550780656).

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

321053664 is a wasteful number, since it uses less digits than its factorization.

321053664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115363 (or 115355 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 321053664 is about 17917.9704207815. The cubic root of 321053664 is about 684.7402812438.

The spelling of 321053664 in words is "three hundred twenty-one million, fifty-three thousand, six hundred sixty-four".