667674736688 has 40 divisors (see below), whose sum is σ = 1318762187568. Its totient is φ = 327407731712.

The previous prime is 667674736669. The next prime is 667674736709. The reversal of 667674736688 is 886637476766.

It is a super-2 number, since 2×667674736688² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1652981 + ... + 2016852.

Almost surely, 2^667674736688 is an apocalyptic number.

It is an amenable number.

667674736688 is a deficient number, since it is larger than the sum of its proper divisors (651087450880).

667674736688 is a wasteful number, since it uses less digits than its factorization.

667674736688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670061 (or 3670055 counting only the distinct ones).

The product of its digits is 2048385024, while the sum is 74.

The spelling of 667674736688 in words is "six hundred sixty-seven billion, six hundred seventy-four million, seven hundred thirty-six thousand, six hundred eighty-eight".