1668350017 has 8 divisors (see below), whose sum is σ = 1730409192. Its totient is φ = 1607184000.

The previous prime is 1668349997. The next prime is 1668350039. The reversal of 1668350017 is 7100538661.

It can be written as a sum of positive squares in 4 ways, for example, as 914518081 + 753831936 = 30241^2 + 27456^2 .

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 1668350017 - 2⁷ = 1668349889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (1668350087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219484 + ... + 226957.

It is an arithmetic number, because the mean of its divisors is an integer number (216301149).

Almost surely, 2^1668350017 is an apocalyptic number.

It is an amenable number.

1668350017 is a deficient number, since it is larger than the sum of its proper divisors (62059175).

1668350017 is a wasteful number, since it uses less digits than its factorization.

1668350017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446579.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1668350017 is about 40845.4405901075. The cubic root of 1668350017 is about 1186.0301336866.

Adding to 1668350017 its reverse (7100538661), we get a palindrome (8768888678).

The spelling of 1668350017 in words is "one billion, six hundred sixty-eight million, three hundred fifty thousand, seventeen".