3784861 has 2 divisors, whose sum is σ = 3784862. Its totient is φ = 3784860.

The previous prime is 3784849. The next prime is 3784873. The reversal of 3784861 is 1684873.

It is a happy number.

3784861 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 (3784849) and next prime (3784873).

It can be written as a sum of positive squares in only one way, i.e., 3308761 + 476100 = 1819^2 + 690^2 .

It is an emirp because it is prime and its reverse (1684873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3784861 - 2⁷ = 3784733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3784861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3785861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892430 + 1892431.

It is an arithmetic number, because the mean of its divisors is an integer number (1892431).

Almost surely, 2^3784861 is an apocalyptic number.

It is an amenable number.

3784861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3784861 is an equidigital number, since it uses as much as digits as its factorization.

3784861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 3784861 is about 1945.4719221824. The cubic root of 3784861 is about 155.8415688277.

The spelling of 3784861 in words is "three million, seven hundred eighty-four thousand, eight hundred sixty-one".