5981805 has 12 divisors (see below), whose sum is σ = 10368540. Its totient is φ = 3190272.

The previous prime is 5981797. The next prime is 5981813. The reversal of 5981805 is 5081895.

It is an interprime number because it is at equal distance from previous prime (5981797) and next prime (5981813).

It can be written as a sum of positive squares in 2 ways, for example, as 3337929 + 2643876 = 1827^2 + 1626^2 .

It is not a de Polignac number, because 5981805 - 2³ = 5981797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5981805.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 66420 + ... + 66509.

It is an arithmetic number, because the mean of its divisors is an integer number (864045).

Almost surely, 2^5981805 is an apocalyptic number.

It is an amenable number.

5981805 is a deficient number, since it is larger than the sum of its proper divisors (4386735).

5981805 is a wasteful number, since it uses less digits than its factorization.

5981805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132940 (or 132937 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 5981805 is about 2445.7728839776. The cubic root of 5981805 is about 181.5281926927.

It can be divided in two parts, 5981 and 805, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 5981805 in words is "five million, nine hundred eighty-one thousand, eight hundred five".