8649671 has 2 divisors, whose sum is σ = 8649672. Its totient is φ = 8649670.

The previous prime is 8649661. The next prime is 8649677. The reversal of 8649671 is 1769468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8649671 is a prime.

It is a Sophie Germain 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 (8649677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324835 + 4324836.

It is an arithmetic number, because the mean of its divisors is an integer number (4324836).

Almost surely, 2^8649671 is an apocalyptic number.

8649671 is a deficient number, since it is larger than the sum of its proper divisors (1).

8649671 is an equidigital number, since it uses as much as digits as its factorization.

8649671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 8649671 is about 2941.0323017607. The cubic root of 8649671 is about 205.2736460597.

The spelling of 8649671 in words is "eight million, six hundred forty-nine thousand, six hundred seventy-one".