327661489 has 4 divisors (see below), whose sum is σ = 327715056. Its totient is φ = 327607924.

The previous prime is 327661447. The next prime is 327661531. The reversal of 327661489 is 984166723.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (327661447) and next prime (327661531).

It is a cyclic number.

It is not a de Polignac number, because 327661489 - 2¹³ = 327653297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327661889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16219 + ... + 30304.

It is an arithmetic number, because the mean of its divisors is an integer number (81928764).

Almost surely, 2^327661489 is an apocalyptic number.

It is an amenable number.

327661489 is a deficient number, since it is larger than the sum of its proper divisors (53567).

327661489 is an equidigital number, since it uses as much as digits as its factorization.

327661489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53566.

The product of its digits is 435456, while the sum is 46.

The square root of 327661489 is about 18101.4222921847. The cubic root of 327661489 is about 689.4061185538.

The spelling of 327661489 in words is "three hundred twenty-seven million, six hundred sixty-one thousand, four hundred eighty-nine".