136866347 has 2 divisors, whose sum is σ = 136866348. Its totient is φ = 136866346.

The previous prime is 136866263. The next prime is 136866403. The reversal of 136866347 is 743668631.

It is a strong prime.

It is an emirp because it is prime and its reverse (743668631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136866347 - 2¹² = 136862251 is a prime.

It is a super-2 number, since 2×136866347² = 37464793882248818, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136866298 and 136866307.

It is not a weakly prime, because it can be changed into another prime (136866647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68433173 + 68433174.

It is an arithmetic number, because the mean of its divisors is an integer number (68433174).

Almost surely, 2^136866347 is an apocalyptic number.

136866347 is a deficient number, since it is larger than the sum of its proper divisors (1).

136866347 is an equidigital number, since it uses as much as digits as its factorization.

136866347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The square root of 136866347 is about 11698.9891443663. The cubic root of 136866347 is about 515.3459792247.

The spelling of 136866347 in words is "one hundred thirty-six million, eight hundred sixty-six thousand, three hundred forty-seven".