13247863 has 2 divisors, whose sum is σ = 13247864. Its totient is φ = 13247862.

The previous prime is 13247851. The next prime is 13247869. The reversal of 13247863 is 36874231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13247863 - 2¹³ = 13239671 is a prime.

It is a super-3 number, since 3×13247863³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13247869) 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, 6623931 + 6623932.

It is an arithmetic number, because the mean of its divisors is an integer number (6623932).

Almost surely, 2^13247863 is an apocalyptic number.

13247863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13247863 is an equidigital number, since it uses as much as digits as its factorization.

13247863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 13247863 is about 3639.7613932784. The cubic root of 13247863 is about 236.6184523441.

The spelling of 13247863 in words is "thirteen million, two hundred forty-seven thousand, eight hundred sixty-three".