667648584287 has 8 divisors (see below), whose sum is σ = 702805983360. Its totient is φ = 632492985240.

The previous prime is 667648584259. The next prime is 667648584293. The reversal of 667648584287 is 782485846766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667648584287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667648584287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667648584887) 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, 347612 + ... + 1206702.

It is an arithmetic number, because the mean of its divisors is an integer number (87850747920).

Almost surely, 2^667648584287 is an apocalyptic number.

667648584287 is a deficient number, since it is larger than the sum of its proper divisors (35157399073).

667648584287 is a wasteful number, since it uses less digits than its factorization.

667648584287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900013.

The product of its digits is 867041280, while the sum is 71.

The spelling of 667648584287 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred eighty-four thousand, two hundred eighty-seven".