327689506685 has 4 divisors (see below), whose sum is σ = 393227408028. Its totient is φ = 262151605344.

The previous prime is 327689506673. The next prime is 327689506687. The reversal of 327689506685 is 586605986723.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72564506884 + 255124999801 = 269378^2 + 505099^2 .

It is a cyclic number.

It is not a de Polignac number, because 327689506685 - 2¹² = 327689502589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327689506687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32768950664 + ... + 32768950673.

It is an arithmetic number, because the mean of its divisors is an integer number (98306852007).

Almost surely, 2^327689506685 is an apocalyptic number.

It is an amenable number.

327689506685 is a deficient number, since it is larger than the sum of its proper divisors (65537901343).

327689506685 is an equidigital number, since it uses as much as digits as its factorization.

327689506685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65537901342.

The product of its (nonzero) digits is 130636800, while the sum is 65.

The spelling of 327689506685 in words is "three hundred twenty-seven billion, six hundred eighty-nine million, five hundred six thousand, six hundred eighty-five".