9867667631 has 2 divisors, whose sum is σ = 9867667632. Its totient is φ = 9867667630.

The previous prime is 9867667619. The next prime is 9867667633. The reversal of 9867667631 is 1367667689.

It is a happy number.

9867667631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1367667689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9867667631 - 2³⁰ = 8793925807 is a prime.

It is a super-2 number, since 2×9867667631² (a number of 21 digits) contains 22 as substring.

Together with 9867667633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9867667633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933833815 + 4933833816.

It is an arithmetic number, because the mean of its divisors is an integer number (4933833816).

Almost surely, 2^9867667631 is an apocalyptic number.

9867667631 is a deficient number, since it is larger than the sum of its proper divisors (1).

9867667631 is an equidigital number, since it uses as much as digits as its factorization.

9867667631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 59.

The square root of 9867667631 is about 99336.1345684439. The cubic root of 9867667631 is about 2144.8890773850.

The spelling of 9867667631 in words is "nine billion, eight hundred sixty-seven million, six hundred sixty-seven thousand, six hundred thirty-one".