667703285017 has 4 divisors (see below), whose sum is σ = 680301460260. Its totient is φ = 655105109776.

The previous prime is 667703284943. The next prime is 667703285027. The reversal of 667703285017 is 710582307766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290638513881 + 377064771136 = 539109^2 + 614056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667703285017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667703285027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6299087542 + ... + 6299087647.

It is an arithmetic number, because the mean of its divisors is an integer number (170075365065).

Almost surely, 2^667703285017 is an apocalyptic number.

It is an amenable number.

667703285017 is a deficient number, since it is larger than the sum of its proper divisors (12598175243).

667703285017 is a wasteful number, since it uses less digits than its factorization.

667703285017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598175242.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 667703285017 in words is "six hundred sixty-seven billion, seven hundred three million, two hundred eighty-five thousand, seventeen".