631666733607 has 24 divisors (see below), whose sum is σ = 1122963083424. Its totient is φ = 333186848064.

The previous prime is 631666733567. The next prime is 631666733609. The reversal of 631666733607 is 706337666136.

It is not a de Polignac number, because 631666733607 - 2⁷ = 631666733479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631666733609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385632108 + ... + 385633745.

It is an arithmetic number, because the mean of its divisors is an integer number (46790128476).

Almost surely, 2^631666733607 is an apocalyptic number.

631666733607 is a deficient number, since it is larger than the sum of its proper divisors (491296349817).

631666733607 is a wasteful number, since it uses less digits than its factorization.

631666733607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771265879 (or 771265876 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 54.

The spelling of 631666733607 in words is "six hundred thirty-one billion, six hundred sixty-six million, seven hundred thirty-three thousand, six hundred seven".