321696474 has 64 divisors (see below), whose sum is σ = 748154880. Its totient is φ = 91134720.

The previous prime is 321696451. The next prime is 321696499. The reversal of 321696474 is 474696123.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182007 + ... + 183765.

It is an arithmetic number, because the mean of its divisors is an integer number (11689920).

Almost surely, 2^321696474 is an apocalyptic number.

321696474 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 321696474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374077440).

321696474 is an abundant number, since it is smaller than the sum of its proper divisors (426458406).

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

321696474 is a wasteful number, since it uses less digits than its factorization.

321696474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its digits is 217728, while the sum is 42.

The square root of 321696474 is about 17935.8990295998. The cubic root of 321696474 is about 685.1969696588.

The spelling of 321696474 in words is "three hundred twenty-one million, six hundred ninety-six thousand, four hundred seventy-four".