667073700664 has 32 divisors (see below), whose sum is σ = 1429689909600. Its totient is φ = 285839475840.

The previous prime is 667073700661. The next prime is 667073700673. The reversal of 667073700664 is 466007370766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667073700661) 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, 697219 + ... + 1349170.

It is an arithmetic number, because the mean of its divisors is an integer number (44677809675).

Almost surely, 2^667073700664 is an apocalyptic number.

It is an amenable number.

667073700664 is an abundant number, since it is smaller than the sum of its proper divisors (762616208936).

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

667073700664 is a wasteful number, since it uses less digits than its factorization.

667073700664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052223 (or 2052219 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 667073700664 in words is "six hundred sixty-seven billion, seventy-three million, seven hundred thousand, six hundred sixty-four".