868074547 has 2 divisors, whose sum is σ = 868074548. Its totient is φ = 868074546.

The previous prime is 868074539. The next prime is 868074551. The reversal of 868074547 is 745470868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868074547 - 2³ = 868074539 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 868074547.

It is not a weakly prime, because it can be changed into another prime (868074577) 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, 434037273 + 434037274.

It is an arithmetic number, because the mean of its divisors is an integer number (434037274).

Almost surely, 2^868074547 is an apocalyptic number.

868074547 is a deficient number, since it is larger than the sum of its proper divisors (1).

868074547 is an equidigital number, since it uses as much as digits as its factorization.

868074547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 868074547 is about 29463.1048431763. The cubic root of 868074547 is about 953.9354921390.

The spelling of 868074547 in words is "eight hundred sixty-eight million, seventy-four thousand, five hundred forty-seven".