631479260686 has 8 divisors (see below), whose sum is σ = 969247237464. Its totient is φ = 308396848200.

The previous prime is 631479260683. The next prime is 631479260689. The reversal of 631479260686 is 686062974136.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (631479260683) and next prime (631479260689).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 631479260686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631479260683) 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 3 ways as a sum of consecutive naturals, for example, 3671390965 + ... + 3671391136.

It is an arithmetic number, because the mean of its divisors is an integer number (121155904683).

Almost surely, 2^631479260686 is an apocalyptic number.

631479260686 is a deficient number, since it is larger than the sum of its proper divisors (337767976778).

631479260686 is a wasteful number, since it uses less digits than its factorization.

631479260686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342782146.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 631479260686 in words is "six hundred thirty-one billion, four hundred seventy-nine million, two hundred sixty thousand, six hundred eighty-six".