667882637268 has 96 divisors (see below), whose sum is σ = 1970296731648. Its totient is φ = 171032668800.

The previous prime is 667882637263. The next prime is 667882637291. The reversal of 667882637268 is 862736288766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667882637263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5024655 + ... + 5155862.

It is an arithmetic number, because the mean of its divisors is an integer number (20523924288).

Almost surely, 2^667882637268 is an apocalyptic number.

It is an amenable number.

667882637268 is an abundant number, since it is smaller than the sum of its proper divisors (1302414094380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667882637268 is a wasteful number, since it uses less digits than its factorization.

667882637268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180613 (or 10180611 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 69.

The spelling of 667882637268 in words is "six hundred sixty-seven billion, eight hundred eighty-two million, six hundred thirty-seven thousand, two hundred sixty-eight".