667622256572 has 36 divisors (see below), whose sum is σ = 1196684118000. Its totient is φ = 325842822144.

The previous prime is 667622256571. The next prime is 667622256589. The reversal of 667622256572 is 275652226766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667622256571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2625929 + ... + 2868927.

It is an arithmetic number, because the mean of its divisors is an integer number (33241225500).

Almost surely, 2^667622256572 is an apocalyptic number.

It is an amenable number.

667622256572 is a deficient number, since it is larger than the sum of its proper divisors (529061861428).

667622256572 is a wasteful number, since it uses less digits than its factorization.

667622256572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243270 (or 243171 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 56.

The spelling of 667622256572 in words is "six hundred sixty-seven billion, six hundred twenty-two million, two hundred fifty-six thousand, five hundred seventy-two".