868115747 has 2 divisors, whose sum is σ = 868115748. Its totient is φ = 868115746.

The previous prime is 868115741. The next prime is 868115767. The reversal of 868115747 is 747511868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868115747 - 2⁶ = 868115683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (868115741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434057873 + 434057874.

It is an arithmetic number, because the mean of its divisors is an integer number (434057874).

Almost surely, 2^868115747 is an apocalyptic number.

868115747 is a deficient number, since it is larger than the sum of its proper divisors (1).

868115747 is an equidigital number, since it uses as much as digits as its factorization.

868115747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 47.

The square root of 868115747 is about 29463.8040144174. The cubic root of 868115747 is about 953.9505835927.

The spelling of 868115747 in words is "eight hundred sixty-eight million, one hundred fifteen thousand, seven hundred forty-seven".