631672566067 has 6 divisors (see below), whose sum is σ = 654205476548. Its totient is φ = 609890752632.

The previous prime is 631672566037. The next prime is 631672566143. The reversal of 631672566067 is 760665276136.

It is not a de Polignac number, because 631672566067 - 2¹⁹ = 631672041779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631672565999 and 631672566017.

It is not an unprimeable number, because it can be changed into a prime (631672566037) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 375547653 + ... + 375549334.

Almost surely, 2^631672566067 is an apocalyptic number.

631672566067 is a deficient number, since it is larger than the sum of its proper divisors (22532910481).

631672566067 is an equidigital number, since it uses as much as digits as its factorization.

631672566067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751097045 (or 751097016 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 631672566067 in words is "six hundred thirty-one billion, six hundred seventy-two million, five hundred sixty-six thousand, sixty-seven".