667703467717 has 36 divisors (see below), whose sum is σ = 802438527072. Its totient is φ = 554868943200.

The previous prime is 667703467699. The next prime is 667703467747. The reversal of 667703467717 is 717764307766.

It is a happy number.

It is not a de Polignac number, because 667703467717 - 2¹¹ = 667703465669 is a prime.

It is a super-2 number, since 2×667703467717² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667703467747) 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 35 ways as a sum of consecutive naturals, for example, 1947742 + ... + 2264752.

Almost surely, 2^667703467717 is an apocalyptic number.

It is an amenable number.

667703467717 is a deficient number, since it is larger than the sum of its proper divisors (134735059355).

667703467717 is a wasteful number, since it uses less digits than its factorization.

667703467717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317162 (or 317138 counting only the distinct ones).

The product of its (nonzero) digits is 43563744, while the sum is 61.

The spelling of 667703467717 in words is "six hundred sixty-seven billion, seven hundred three million, four hundred sixty-seven thousand, seven hundred seventeen".