8081663 has 2 divisors, whose sum is σ = 8081664. Its totient is φ = 8081662.

The previous prime is 8081659. The next prime is 8081699. The reversal of 8081663 is 3661808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8081663 - 2² = 8081659 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8081653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040831 + 4040832.

It is an arithmetic number, because the mean of its divisors is an integer number (4040832).

Almost surely, 2^8081663 is an apocalyptic number.

8081663 is a deficient number, since it is larger than the sum of its proper divisors (1).

8081663 is an equidigital number, since it uses as much as digits as its factorization.

8081663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 8081663 is about 2842.8265863397. The cubic root of 8081663 is about 200.6782224716.

The spelling of 8081663 in words is "eight million, eighty-one thousand, six hundred sixty-three".