161807 has 2 divisors, whose sum is σ = 161808. Its totient is φ = 161806.

The previous prime is 161783. The next prime is 161831. The reversal of 161807 is 708161.

161807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (161783) and next prime (161831).

It is an emirp because it is prime and its reverse (708161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161807 - 2⁶ = 161743 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161807.

It is not a weakly prime, because it can be changed into another prime (161407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80903 + 80904.

It is an arithmetic number, because the mean of its divisors is an integer number (80904).

2¹⁶¹⁸⁰⁷ is an apocalyptic number.

161807 is a deficient number, since it is larger than the sum of its proper divisors (1).

161807 is an equidigital number, since it uses as much as digits as its factorization.

161807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 161807 is about 402.2524083209. The cubic root of 161807 is about 54.4919607703.

Adding to 161807 its reverse (708161), we get a palindrome (869968).

The spelling of 161807 in words is "one hundred sixty-one thousand, eight hundred seven".