323643648 has 72 divisors (see below), whose sum is σ = 864023328. Its totient is φ = 107548672.

The previous prime is 323643629. The next prime is 323643659. The reversal of 323643648 is 846346323.

It is a nude number because it is divisible by every one of its digits.

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, 473515 + ... + 474197.

It is an arithmetic number, because the mean of its divisors is an integer number (12000324).

Almost surely, 2^323643648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323643648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432011664).

323643648 is an abundant number, since it is smaller than the sum of its proper divisors (540379680).

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

323643648 is an equidigital number, since it uses as much as digits as its factorization.

323643648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1305 counting only the distinct ones).

The product of its digits is 248832, while the sum is 39.

The square root of 323643648 is about 17990.0986100688. The cubic root of 323643648 is about 686.5766499442.

The spelling of 323643648 in words is "three hundred twenty-three million, six hundred forty-three thousand, six hundred forty-eight".