321446680 has 16 divisors (see below), whose sum is σ = 723255120. Its totient is φ = 128578656.

The previous prime is 321446663. The next prime is 321446681. The reversal of 321446680 is 86644123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321446681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4018044 + ... + 4018123.

It is an arithmetic number, because the mean of its divisors is an integer number (45203445).

Almost surely, 2^321446680 is an apocalyptic number.

It is an amenable number.

321446680 is an abundant number, since it is smaller than the sum of its proper divisors (401808440).

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

321446680 is a wasteful number, since it uses less digits than its factorization.

321446680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036178 (or 8036174 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 321446680 is about 17928.9341568315. The cubic root of 321446680 is about 685.0195742715.

It can be divided in two parts, 3214 and 46680, that added together give a palindrome (49894).

The spelling of 321446680 in words is "three hundred twenty-one million, four hundred forty-six thousand, six hundred eighty".