667604813532648 has 64 divisors (see below), whose sum is σ = 1678406290790400. Its totient is φ = 221285653529280.

The previous prime is 667604813532619. The next prime is 667604813532649. The reversal of 667604813532648 is 846235318406766.

It is not an unprimeable number, because it can be changed into a prime (667604813532649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99348738 + ... + 105855473.

It is an arithmetic number, because the mean of its divisors is an integer number (26225098293600).

Almost surely, 2^{667604813532648} is an apocalyptic number.

It is an amenable number.

667604813532648 is an abundant number, since it is smaller than the sum of its proper divisors (1010801477257752).

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

667604813532648 is a wasteful number, since it uses less digits than its factorization.

667604813532648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205204982 (or 205204978 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 69.

The spelling of 667604813532648 in words is "six hundred sixty-seven trillion, six hundred four billion, eight hundred thirteen million, five hundred thirty-two thousand, six hundred forty-eight".