327609640 has 32 divisors (see below), whose sum is σ = 739277280. Its totient is φ = 130660672.

The previous prime is 327609617. The next prime is 327609641. The reversal of 327609640 is 46906723.

It is a self number, because there is not a number n which added to its sum of digits gives 327609640.

It is not an unprimeable number, because it can be changed into a prime (327609641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (23102415).

Almost surely, 2^327609640 is an apocalyptic number.

It is an amenable number.

327609640 is an abundant number, since it is smaller than the sum of its proper divisors (411667640).

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

327609640 is a wasteful number, since it uses less digits than its factorization.

327609640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23961 (or 23957 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 327609640 is about 18099.9900552459. The cubic root of 327609640 is about 689.3697528689.

The spelling of 327609640 in words is "three hundred twenty-seven million, six hundred nine thousand, six hundred forty".