321668932 has 12 divisors (see below), whose sum is σ = 606222316. Its totient is φ = 148462560.

The previous prime is 321668891. The next prime is 321668933. The reversal of 321668932 is 239866123.

It can be written as a sum of positive squares in 2 ways, for example, as 28026436 + 293642496 = 5294^2 + 17136^2 .

It is a hoax number, since the sum of its digits (40) 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 (321668933) 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, 3092919 + ... + 3093022.

Almost surely, 2^321668932 is an apocalyptic number.

It is an amenable number.

321668932 is a deficient number, since it is larger than the sum of its proper divisors (284553384).

321668932 is a wasteful number, since it uses less digits than its factorization.

321668932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185958 (or 6185956 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 321668932 is about 17935.1312233839. The cubic root of 321668932 is about 685.1774147522.

The spelling of 321668932 in words is "three hundred twenty-one million, six hundred sixty-eight thousand, nine hundred thirty-two".