327639 has 16 divisors (see below), whose sum is σ = 487424. Its totient is φ = 194400.

The previous prime is 327629. The next prime is 327647. The reversal of 327639 is 936723.

It is a happy number.

It is not a de Polignac number, because 327639 - 2⁷ = 327511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 327639.

It is not an unprimeable number, because it can be changed into a prime (327619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074 + ... + 1344.

It is an arithmetic number, because the mean of its divisors is an integer number (30464).

2³²⁷⁶³⁹ is an apocalyptic number.

327639 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

327639 is a deficient number, since it is larger than the sum of its proper divisors (159785).

327639 is a wasteful number, since it uses less digits than its factorization.

327639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its digits is 6804, while the sum is 30.

The square root of 327639 is about 572.3975890935. The cubic root of 327639 is about 68.9390345762.

The spelling of 327639 in words is "three hundred twenty-seven thousand, six hundred thirty-nine".