1660325 has 6 divisors (see below), whose sum is σ = 2058834. Its totient is φ = 1328240.

The previous prime is 1660297. The next prime is 1660357. The reversal of 1660325 is 5230661.

It can be written as a sum of positive squares in 3 ways, for example, as 37249 + 1623076 = 193^2 + 1274^2 .

It is not a de Polignac number, because 1660325 - 2⁶ = 1660261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1660325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33182 + ... + 33231.

It is an arithmetic number, because the mean of its divisors is an integer number (343139).

2^1660325 is an apocalyptic number.

It is an amenable number.

1660325 is a deficient number, since it is larger than the sum of its proper divisors (398509).

1660325 is an equidigital number, since it uses as much as digits as its factorization.

1660325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66423 (or 66418 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1660325 is about 1288.5359909603. The cubic root of 1660325 is about 118.4125414719.

Adding to 1660325 its reverse (5230661), we get a palindrome (6890986).

The spelling of 1660325 in words is "one million, six hundred sixty thousand, three hundred twenty-five".