667688707710 has 48 divisors (see below), whose sum is σ = 1791990345600. Its totient is φ = 172306762560.

The previous prime is 667688707691. The next prime is 667688707711. The reversal of 667688707710 is 17707886766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667688707711) 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 23 ways as a sum of consecutive naturals, for example, 119654685 + ... + 119660264.

It is an arithmetic number, because the mean of its divisors is an integer number (37333132200).

Almost surely, 2^667688707710 is an apocalyptic number.

667688707710 is an abundant number, since it is smaller than the sum of its proper divisors (1124301637890).

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

667688707710 is a wasteful number, since it uses less digits than its factorization.

667688707710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239314993 (or 239314990 counting only the distinct ones).

The product of its (nonzero) digits is 33191424, while the sum is 63.

The spelling of 667688707710 in words is "six hundred sixty-seven billion, six hundred eighty-eight million, seven hundred seven thousand, seven hundred ten".