8705342047 has 2 divisors, whose sum is σ = 8705342048. Its totient is φ = 8705342046.

The previous prime is 8705342017. The next prime is 8705342057. The reversal of 8705342047 is 7402435078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8705342047 - 2¹¹ = 8705339999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8705342017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4352671023 + 4352671024.

It is an arithmetic number, because the mean of its divisors is an integer number (4352671024).

Almost surely, 2^8705342047 is an apocalyptic number.

8705342047 is a deficient number, since it is larger than the sum of its proper divisors (1).

8705342047 is an equidigital number, since it uses as much as digits as its factorization.

8705342047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 8705342047 is about 93302.4225141020. The cubic root of 8705342047 is about 2057.1309895427.

The spelling of 8705342047 in words is "eight billion, seven hundred five million, three hundred forty-two thousand, forty-seven".