10639613 has 2 divisors, whose sum is σ = 10639614. Its totient is φ = 10639612.

The previous prime is 10639589. The next prime is 10639631. The reversal of 10639613 is 31693601.

Together with next prime (10639631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10355524 + 284089 = 3218^2 + 533^2 .

It is an emirp because it is prime and its reverse (31693601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10639613 - 2²⁰ = 9591037 is a prime.

It is a super-2 number, since 2×10639613² = 226402729579538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10639633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5319806 + 5319807.

It is an arithmetic number, because the mean of its divisors is an integer number (5319807).

Almost surely, 2^10639613 is an apocalyptic number.

It is an amenable number.

10639613 is a deficient number, since it is larger than the sum of its proper divisors (1).

10639613 is an equidigital number, since it uses as much as digits as its factorization.

10639613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 10639613 is about 3261.8419642895. The cubic root of 10639613 is about 219.9422231198.

The spelling of 10639613 in words is "ten million, six hundred thirty-nine thousand, six hundred thirteen".