3580861 has 2 divisors, whose sum is σ = 3580862. Its totient is φ = 3580860.

The previous prime is 3580859. The next prime is 3580901. The reversal of 3580861 is 1680853.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3261636 + 319225 = 1806^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 3580861 - 2¹ = 3580859 is a prime.

Together with 3580859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3580831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1790430 + 1790431.

It is an arithmetic number, because the mean of its divisors is an integer number (1790431).

Almost surely, 2^3580861 is an apocalyptic number.

It is an amenable number.

3580861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3580861 is an equidigital number, since it uses as much as digits as its factorization.

3580861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 3580861 is about 1892.3163054838. The cubic root of 3580861 is about 152.9898038117.

The spelling of 3580861 in words is "three million, five hundred eighty thousand, eight hundred sixty-one".