321350666884 has 27 divisors (see below), whose sum is σ = 608977937253. Its totient is φ = 148308889872.

The previous prime is 321350666873. The next prime is 321350666887. The reversal of 321350666884 is 488666053123.

The square root of 321350666884 is 566878.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 47537080900 + 273813585984 = 218030^2 + 523272^2 .

It is a super-2 number, since 2×321350666884² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321350666887) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14727927 + ... + 14749729.

Almost surely, 2^321350666884 is an apocalyptic number.

321350666884 is the 566878-th square number.

It is an amenable number.

321350666884 is a deficient number, since it is larger than the sum of its proper divisors (287627270369).

321350666884 is an frugal number, since it uses more digits than its factorization.

321350666884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43636 (or 21818 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 321350666884 in words is "three hundred twenty-one billion, three hundred fifty million, six hundred sixty-six thousand, eight hundred eighty-four".