8361641 has 2 divisors, whose sum is σ = 8361642. Its totient is φ = 8361640.

The previous prime is 8361631. The next prime is 8361677. The reversal of 8361641 is 1461638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8323225 + 38416 = 2885^2 + 196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8361641 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8361601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180820 + 4180821.

It is an arithmetic number, because the mean of its divisors is an integer number (4180821).

Almost surely, 2^8361641 is an apocalyptic number.

It is an amenable number.

8361641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8361641 is an equidigital number, since it uses as much as digits as its factorization.

8361641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 8361641 is about 2891.6502208946. The cubic root of 8361641 is about 202.9693710007.

The spelling of 8361641 in words is "eight million, three hundred sixty-one thousand, six hundred forty-one".