321664462 has 16 divisors (see below), whose sum is σ = 570440160. Its totient is φ = 133102368.

The previous prime is 321664459. The next prime is 321664493. The reversal of 321664462 is 264466123.

321664462 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×321664462² = 206936052227498888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395733 + ... + 396544.

It is an arithmetic number, because the mean of its divisors is an integer number (35652510).

Almost surely, 2^321664462 is an apocalyptic number.

321664462 is a deficient number, since it is larger than the sum of its proper divisors (248775698).

321664462 is a wasteful number, since it uses less digits than its factorization.

321664462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792315.

The product of its digits is 41472, while the sum is 34.

The square root of 321664462 is about 17935.0066071914. The cubic root of 321664462 is about 685.1742409328.

The spelling of 321664462 in words is "three hundred twenty-one million, six hundred sixty-four thousand, four hundred sixty-two".