2961805 has 32 divisors (see below), whose sum is σ = 4550400. Its totient is φ = 1834560.

The previous prime is 2961787. The next prime is 2961809. The reversal of 2961805 is 5081692.

2961805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2961805 - 2⁵ = 2961773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2961809) 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 in 31 ways as a sum of consecutive naturals, for example, 18787 + ... + 18943.

It is an arithmetic number, because the mean of its divisors is an integer number (142200).

2^2961805 is an apocalyptic number.

It is an amenable number.

2961805 is a deficient number, since it is larger than the sum of its proper divisors (1588595).

2961805 is a wasteful number, since it uses less digits than its factorization.

2961805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2961805 is about 1720.9895409328. The cubic root of 2961805 is about 143.6102662306.

The spelling of 2961805 in words is "two million, nine hundred sixty-one thousand, eight hundred five".