8645971 has 2 divisors, whose sum is σ = 8645972. Its totient is φ = 8645970.

The previous prime is 8645941. The next prime is 8645981. The reversal of 8645971 is 1795468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8645971 - 2¹¹ = 8643923 is a prime.

It is not a weakly prime, because it can be changed into another prime (8645941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322985 + 4322986.

It is an arithmetic number, because the mean of its divisors is an integer number (4322986).

Almost surely, 2^8645971 is an apocalyptic number.

8645971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645971 is an equidigital number, since it uses as much as digits as its factorization.

8645971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 8645971 is about 2940.4032036440. The cubic root of 8645971 is about 205.2443724679.

The spelling of 8645971 in words is "eight million, six hundred forty-five thousand, nine hundred seventy-one".