1660302005 has 8 divisors (see below), whose sum is σ = 1993709400. Its totient is φ = 1327343616.

The previous prime is 1660302001. The next prime is 1660302029. The reversal of 1660302005 is 5002030661.

It can be written as a sum of positive squares in 4 ways, for example, as 425060689 + 1235241316 = 20617^2 + 35146^2 .

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 1660302005 - 2² = 1660302001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660302001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 104060 + ... + 118949.

It is an arithmetic number, because the mean of its divisors is an integer number (249213675).

Almost surely, 2^1660302005 is an apocalyptic number.

It is an amenable number.

1660302005 is a deficient number, since it is larger than the sum of its proper divisors (333407395).

1660302005 is a wasteful number, since it uses less digits than its factorization.

1660302005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224503.

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

The square root of 1660302005 is about 40746.8036169710. The cubic root of 1660302005 is about 1184.1199481006.

Adding to 1660302005 its reverse (5002030661), we get a palindrome (6662332666).

The spelling of 1660302005 in words is "one billion, six hundred sixty million, three hundred two thousand, five".