667441408624 has 20 divisors (see below), whose sum is σ = 1293199162000. Its totient is φ = 333712592640.

The previous prime is 667441408607. The next prime is 667441408633. The reversal of 667441408624 is 426804144766.

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, 201877 + ... + 1172875.

It is an arithmetic number, because the mean of its divisors is an integer number (64659958100).

Almost surely, 2^667441408624 is an apocalyptic number.

It is an amenable number.

667441408624 is a deficient number, since it is larger than the sum of its proper divisors (625757753376).

667441408624 is a wasteful number, since it uses less digits than its factorization.

667441408624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013968 (or 1013962 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 52.

The spelling of 667441408624 in words is "six hundred sixty-seven billion, four hundred forty-one million, four hundred eight thousand, six hundred twenty-four".