2861603 has 2 divisors, whose sum is σ = 2861604. Its totient is φ = 2861602.

The previous prime is 2861587. The next prime is 2861623. The reversal of 2861603 is 3061682.

2861603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2861603 - 2⁴ = 2861587 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2861623) 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, 1430801 + 1430802.

It is an arithmetic number, because the mean of its divisors is an integer number (1430802).

2^2861603 is an apocalyptic number.

2861603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861603 is an equidigital number, since it uses as much as digits as its factorization.

2861603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2861603 is about 1691.6273230236. The cubic root of 2861603 is about 141.9721396112.

The spelling of 2861603 in words is "two million, eight hundred sixty-one thousand, six hundred three".