1328165 has 8 divisors (see below), whose sum is σ = 1609080. Its totient is φ = 1052352.

The previous prime is 1328161. The next prime is 1328167. The reversal of 1328165 is 5618231.

It can be written as a sum of positive squares in 4 ways, for example, as 543169 + 784996 = 737^2 + 886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328165 - 2² = 1328161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674 + ... + 1763.

It is an arithmetic number, because the mean of its divisors is an integer number (201135).

2^1328165 is an apocalyptic number.

It is an amenable number.

1328165 is a deficient number, since it is larger than the sum of its proper divisors (280915).

1328165 is a wasteful number, since it uses less digits than its factorization.

1328165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551.

The product of its digits is 1440, while the sum is 26.

The square root of 1328165 is about 1152.4604114676. The cubic root of 1328165 is about 109.9218453109.

The spelling of 1328165 in words is "one million, three hundred twenty-eight thousand, one hundred sixty-five".