3200861 has 2 divisors, whose sum is σ = 3200862. Its totient is φ = 3200860.

The previous prime is 3200839. The next prime is 3200881. The reversal of 3200861 is 1680023.

It is an a-pointer prime, because the next prime (3200881) can be obtained adding 3200861 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3171961 + 28900 = 1781^2 + 170^2 .

It is an emirp because it is prime and its reverse (1680023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3200861 - 2¹⁰ = 3199837 is a prime.

It is a super-2 number, since 2×3200861² = 20491022282642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₂₃₀₂₇₆ and since 3200861 and 230276 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3200801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600430 + 1600431.

It is an arithmetic number, because the mean of its divisors is an integer number (1600431).

Almost surely, 2^3200861 is an apocalyptic number.

It is an amenable number.

3200861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3200861 is an equidigital number, since it uses as much as digits as its factorization.

3200861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3200861 is about 1789.0950226302. The cubic root of 3200861 is about 147.3744752234.

Adding to 3200861 its reverse (1680023), we get a palindrome (4880884).

The spelling of 3200861 in words is "three million, two hundred thousand, eight hundred sixty-one".