971567087 has 2 divisors, whose sum is σ = 971567088. Its totient is φ = 971567086.

The previous prime is 971567059. The next prime is 971567111. The reversal of 971567087 is 780765179.

It is a strong prime.

It is an emirp because it is prime and its reverse (780765179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971567087 - 2¹⁴ = 971550703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971567027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485783543 + 485783544.

It is an arithmetic number, because the mean of its divisors is an integer number (485783544).

Almost surely, 2^971567087 is an apocalyptic number.

971567087 is a deficient number, since it is larger than the sum of its proper divisors (1).

971567087 is an equidigital number, since it uses as much as digits as its factorization.

971567087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 971567087 is about 31169.9709175354. The cubic root of 971567087 is about 990.4310903576.

The spelling of 971567087 in words is "nine hundred seventy-one million, five hundred sixty-seven thousand, eighty-seven".