1668337017 has 4 divisors (see below), whose sum is σ = 2224449360. Its totient is φ = 1112224676.

The previous prime is 1668336991. The next prime is 1668337049. The reversal of 1668337017 is 7107338661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1668337017 - 2¹⁰ = 1668335993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1668337017.

It is not an unprimeable number, because it can be changed into a prime (1668337087) 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 3 ways as a sum of consecutive naturals, for example, 278056167 + ... + 278056172.

It is an arithmetic number, because the mean of its divisors is an integer number (556112340).

Almost surely, 2^1668337017 is an apocalyptic number.

It is an amenable number.

1668337017 is a deficient number, since it is larger than the sum of its proper divisors (556112343).

1668337017 is an equidigital number, since it uses as much as digits as its factorization.

1668337017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556112342.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1668337017 is about 40845.2814533087. The cubic root of 1668337017 is about 1186.0270531117.

The spelling of 1668337017 in words is "one billion, six hundred sixty-eight million, three hundred thirty-seven thousand, seventeen".