327996405 has 32 divisors (see below), whose sum is σ = 636117120. Its totient is φ = 159027840.

The previous prime is 327996397. The next prime is 327996437. The reversal of 327996405 is 504699723.

It is a happy number.

It is not a de Polignac number, because 327996405 - 2³ = 327996397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 108952 + ... + 111921.

It is an arithmetic number, because the mean of its divisors is an integer number (19878660).

Almost surely, 2^327996405 is an apocalyptic number.

It is an amenable number.

327996405 is a deficient number, since it is larger than the sum of its proper divisors (308120715).

327996405 is a wasteful number, since it uses less digits than its factorization.

327996405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220898 (or 220892 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 327996405 is about 18110.6710256688. The cubic root of 327996405 is about 689.6409284858.

It can be divided in two parts, 32799 and 6405, that added together give a square (39204 = 198²).

The spelling of 327996405 in words is "three hundred twenty-seven million, nine hundred ninety-six thousand, four hundred five".