13061639 has 2 divisors, whose sum is σ = 13061640. Its totient is φ = 13061638.

The previous prime is 13061611. The next prime is 13061641. The reversal of 13061639 is 93616031.

13061639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13061639 - 2¹² = 13057543 is a prime.

Together with 13061641, 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 (13061669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6530819 + 6530820.

It is an arithmetic number, because the mean of its divisors is an integer number (6530820).

Almost surely, 2^13061639 is an apocalyptic number.

13061639 is a deficient number, since it is larger than the sum of its proper divisors (1).

13061639 is an equidigital number, since it uses as much as digits as its factorization.

13061639 is an evil number, because the sum of its binary digits is even.

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

The square root of 13061639 is about 3614.0889585067. The cubic root of 13061639 is about 235.5045083980.

The spelling of 13061639 in words is "thirteen million, sixty-one thousand, six hundred thirty-nine".