1660411327 has 4 divisors (see below), whose sum is σ = 1717666920. Its totient is φ = 1603155736.

The previous prime is 1660411271. The next prime is 1660411351. The reversal of 1660411327 is 7231140661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7231140661 = 11443 ⋅631927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660411327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660421327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28627753 + ... + 28627810.

It is an arithmetic number, because the mean of its divisors is an integer number (429416730).

Almost surely, 2^1660411327 is an apocalyptic number.

1660411327 is a deficient number, since it is larger than the sum of its proper divisors (57255593).

1660411327 is an equidigital number, since it uses as much as digits as its factorization.

1660411327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57255592.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1660411327 is about 40748.1450743466. The cubic root of 1660411327 is about 1184.1459368504.

Adding to 1660411327 its reverse (7231140661), we get a palindrome (8891551988).

The spelling of 1660411327 in words is "one billion, six hundred sixty million, four hundred eleven thousand, three hundred twenty-seven".