5985781 has 8 divisors (see below), whose sum is σ = 6116544. Its totient is φ = 5856480.

The previous prime is 5985761. The next prime is 5985799. The reversal of 5985781 is 1875895.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5985781 - 2⁷ = 5985653 is a prime.

It is a super-2 number, since 2×5985781² = 71659148359922, which contains 22 as substring.

It is a Duffinian number.

5985781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5985761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11946 + ... + 12436.

It is an arithmetic number, because the mean of its divisors is an integer number (764568).

Almost surely, 2^5985781 is an apocalyptic number.

It is an amenable number.

5985781 is a deficient number, since it is larger than the sum of its proper divisors (130763).

5985781 is a wasteful number, since it uses less digits than its factorization.

5985781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 100800, while the sum is 43.

The square root of 5985781 is about 2446.5855799461. The cubic root of 5985781 is about 181.5684033114.

The spelling of 5985781 in words is "five million, nine hundred eighty-five thousand, seven hundred eighty-one".