8081699 has 2 divisors, whose sum is σ = 8081700. Its totient is φ = 8081698.

The previous prime is 8081663. The next prime is 8081713. The reversal of 8081699 is 9961808.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8081699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8081629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040849 + 4040850.

It is an arithmetic number, because the mean of its divisors is an integer number (4040850).

Almost surely, 2^8081699 is an apocalyptic number.

8081699 is a deficient number, since it is larger than the sum of its proper divisors (1).

8081699 is an equidigital number, since it uses as much as digits as its factorization.

8081699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 8081699 is about 2842.8329180590. The cubic root of 8081699 is about 200.6785204468.

It can be divided in two parts, 80 and 81699, that multiplied together give a triangular number (6535920 = T₃₆₁₅).

The spelling of 8081699 in words is "eight million, eighty-one thousand, six hundred ninety-nine".