5727681 has 6 divisors (see below), whose sum is σ = 8273330. Its totient is φ = 3818448.

The previous prime is 5727677. The next prime is 5727697. The reversal of 5727681 is 1867275.

5727681 is a `hidden beast` number, since 572 + 7 + 6 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5022081 + 705600 = 2241^2 + 840^2 .

It is not a de Polignac number, because 5727681 - 2² = 5727677 is a prime.

It is a super-2 number, since 2×5727681² = 65612659275522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5727671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318196 + ... + 318213.

Almost surely, 2^5727681 is an apocalyptic number.

It is an amenable number.

5727681 is a deficient number, since it is larger than the sum of its proper divisors (2545649).

5727681 is a wasteful number, since it uses less digits than its factorization.

5727681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636415 (or 636412 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 5727681 is about 2393.2574036238. The cubic root of 5727681 is about 178.9202957572.

The spelling of 5727681 in words is "five million, seven hundred twenty-seven thousand, six hundred eighty-one".