862631679013 has 8 divisors (see below), whose sum is σ = 938185864056. Its totient is φ = 788391480000.

The previous prime is 862631678969. The next prime is 862631679083. The reversal of 862631679013 is 310976136268.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167079015009 + 695552664004 = 408753^2 + 833998^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 862631679013 - 2⁹ = 862631678501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862631679083) 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 7 ways as a sum of consecutive naturals, for example, 328495138 + ... + 328497763.

It is an arithmetic number, because the mean of its divisors is an integer number (117273233007).

Almost surely, 2^862631679013 is an apocalyptic number.

It is an amenable number.

862631679013 is a deficient number, since it is larger than the sum of its proper divisors (75554185043).

862631679013 is a wasteful number, since it uses less digits than its factorization.

862631679013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656993015.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 862631679013 in words is "eight hundred sixty-two billion, six hundred thirty-one million, six hundred seventy-nine thousand, thirteen".