1165799 has 2 divisors, whose sum is σ = 1165800. Its totient is φ = 1165798.

The previous prime is 1165789. The next prime is 1165819. The reversal of 1165799 is 9975611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1165799 - 2¹² = 1161703 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 (1165729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582899 + 582900.

It is an arithmetic number, because the mean of its divisors is an integer number (582900).

2^1165799 is an apocalyptic number.

1165799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165799 is an equidigital number, since it uses as much as digits as its factorization.

1165799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 1165799 is about 1079.7217234084. The cubic root of 1165799 is about 105.2465558948.

The spelling of 1165799 in words is "one million, one hundred sixty-five thousand, seven hundred ninety-nine".