1663713317 has 12 divisors (see below), whose sum is σ = 1940414976. Its totient is φ = 1422300600.

The previous prime is 1663713287. The next prime is 1663713323. The reversal of 1663713317 is 7133173661.

It is not a de Polignac number, because 1663713317 - 2⁶ = 1663713253 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 (1663713367) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 25559 + ... + 63092.

It is an arithmetic number, because the mean of its divisors is an integer number (161701248).

Almost surely, 2^1663713317 is an apocalyptic number.

It is an amenable number.

1663713317 is a deficient number, since it is larger than the sum of its proper divisors (276701659).

1663713317 is an equidigital number, since it uses as much as digits as its factorization.

1663713317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89048 (or 89041 counting only the distinct ones).

The product of its digits is 47628, while the sum is 38.

The square root of 1663713317 is about 40788.6420097556. The cubic root of 1663713317 is about 1184.9303707893.

Adding to 1663713317 its reverse (7133173661), we get a palindrome (8796886978).

The spelling of 1663713317 in words is "one billion, six hundred sixty-three million, seven hundred thirteen thousand, three hundred seventeen".