8661799 has 2 divisors, whose sum is σ = 8661800. Its totient is φ = 8661798.

The previous prime is 8661769. The next prime is 8661839. The reversal of 8661799 is 9971668.

8661799 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8661799 - 2⁵ = 8661767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8661769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330899 + 4330900.

It is an arithmetic number, because the mean of its divisors is an integer number (4330900).

Almost surely, 2^8661799 is an apocalyptic number.

8661799 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661799 is an equidigital number, since it uses as much as digits as its factorization.

8661799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 8661799 is about 2943.0934405825. The cubic root of 8661799 is about 205.3695416577.

The spelling of 8661799 in words is "eight million, six hundred sixty-one thousand, seven hundred ninety-nine".