327645409 has 12 divisors (see below), whose sum is σ = 410457684. Its totient is φ = 259235424.

The previous prime is 327645361. The next prime is 327645463. The reversal of 327645409 is 904546723.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 185368225 + 142277184 = 13615^2 + 11928^2 .

It is not a de Polignac number, because 327645409 - 2¹¹ = 327643361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (327645499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256542 + ... + 257815.

It is an arithmetic number, because the mean of its divisors is an integer number (34204807).

Almost surely, 2^327645409 is an apocalyptic number.

It is an amenable number.

327645409 is a deficient number, since it is larger than the sum of its proper divisors (82812275).

327645409 is a wasteful number, since it uses less digits than its factorization.

327645409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514384 (or 514377 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 327645409 is about 18100.9781227424. The cubic root of 327645409 is about 689.3948408256.

The spelling of 327645409 in words is "three hundred twenty-seven million, six hundred forty-five thousand, four hundred nine".