327640145 has 16 divisors (see below), whose sum is σ = 449874048. Its totient is φ = 224398080.

The previous prime is 327640141. The next prime is 327640163. The reversal of 327640145 is 541046723.

327640145 = 88² + 89² + ... + 994².

It is not a de Polignac number, because 327640145 - 2² = 327640141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327640141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26585 + ... + 36905.

It is an arithmetic number, because the mean of its divisors is an integer number (28117128).

Almost surely, 2^327640145 is an apocalyptic number.

327640145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

327640145 is a deficient number, since it is larger than the sum of its proper divisors (122233903).

327640145 is a wasteful number, since it uses less digits than its factorization.

327640145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11240.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 327640145 is about 18100.8327156515. The cubic root of 327640145 is about 689.3911488323.

Adding to 327640145 its reverse (541046723), we get a palindrome (868686868).

The spelling of 327640145 in words is "three hundred twenty-seven million, six hundred forty thousand, one hundred forty-five".