13078787 has 2 divisors, whose sum is σ = 13078788. Its totient is φ = 13078786.

The previous prime is 13078781. The next prime is 13078799. The reversal of 13078787 is 78787031.

It is a weak prime.

It is an emirp because it is prime and its reverse (78787031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13078787 - 2⁴ = 13078771 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (13078781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6539393 + 6539394.

It is an arithmetic number, because the mean of its divisors is an integer number (6539394).

Almost surely, 2^13078787 is an apocalyptic number.

13078787 is a deficient number, since it is larger than the sum of its proper divisors (1).

13078787 is an equidigital number, since it uses as much as digits as its factorization.

13078787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 13078787 is about 3616.4605624837. The cubic root of 13078787 is about 235.6075241913.

The spelling of 13078787 in words is "thirteen million, seventy-eight thousand, seven hundred eighty-seven".