5706981 has 18 divisors (see below), whose sum is σ = 9590022. Its totient is φ = 3260880.

The previous prime is 5706979. The next prime is 5707001. The reversal of 5706981 is 1896075.

5706981 is a `hidden beast` number, since 570 + 6 + 9 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5336100 + 370881 = 2310^2 + 609^2 .

It is not a de Polignac number, because 5706981 - 2¹ = 5706979 is a prime.

It is a super-2 number, since 2×5706981² = 65139264268722, which contains 22 as substring.

5706981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5706901) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6030 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (532779).

Almost surely, 2^5706981 is an apocalyptic number.

It is an amenable number.

5706981 is a deficient number, since it is larger than the sum of its proper divisors (3883041).

5706981 is a wasteful number, since it uses less digits than its factorization.

5706981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12961 (or 12951 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 5706981 is about 2388.9288394592. The cubic root of 5706981 is about 178.7044945862.

The spelling of 5706981 in words is "five million, seven hundred six thousand, nine hundred eighty-one".