667421062684 has 12 divisors (see below), whose sum is σ = 1168073709264. Its totient is φ = 333685717184.

The previous prime is 667421062643. The next prime is 667421062691. The reversal of 667421062684 is 486260124766.

667421062684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6142957 + ... + 6250660.

It is an arithmetic number, because the mean of its divisors is an integer number (97339475772).

Almost surely, 2^667421062684 is an apocalyptic number.

It is an amenable number.

667421062684 is a deficient number, since it is larger than the sum of its proper divisors (500652646580).

667421062684 is a wasteful number, since it uses less digits than its factorization.

667421062684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407084 (or 12407082 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 667421062684 in words is "six hundred sixty-seven billion, four hundred twenty-one million, sixty-two thousand, six hundred eighty-four".