321861764 has 12 divisors (see below), whose sum is σ = 643723584. Its totient is φ = 137940744.

The previous prime is 321861763. The next prime is 321861791. The reversal of 321861764 is 467168123.

321861764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

321861764 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (321861763) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5747504 + ... + 5747559.

It is an arithmetic number, because the mean of its divisors is an integer number (53643632).

Almost surely, 2^321861764 is an apocalyptic number.

It is an amenable number.

321861764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

321861764 is a wasteful number, since it uses less digits than its factorization.

321861764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495074 (or 11495072 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 321861764 is about 17940.5062358898. The cubic root of 321861764 is about 685.3143026362.

The spelling of 321861764 in words is "three hundred twenty-one million, eight hundred sixty-one thousand, seven hundred sixty-four".