5686517281 has 9 divisors (see below), whose sum is σ = 5771068569. Its totient is φ = 5603190336.

The previous prime is 5686517269. The next prime is 5686517297. The reversal of 5686517281 is 1827156865.

The square root of 5686517281 is 75409.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2172398881 + 3514118400 = 46609^2 + 59280^2 .

It is not a de Polignac number, because 5686517281 - 2¹³ = 5686509089 is a prime.

It is a super-2 number, since 2×5686517281² = 64672957574223265922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5686517261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5504341 + ... + 5505373.

It is an arithmetic number, because the mean of its divisors is an integer number (641229841).

Almost surely, 2^5686517281 is an apocalyptic number.

5686517281 is the 75409-th square number.

5686517281 is the 37705-th centered octagonal number.

It is an amenable number.

5686517281 is a deficient number, since it is larger than the sum of its proper divisors (84551288).

5686517281 is an frugal number, since it uses more digits than its factorization.

5686517281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 1106 counting only the distinct ones).

The product of its digits is 806400, while the sum is 49.

The cubic root of 5686517281 is about 1784.9064314999.

Multiplying 5686517281 by its sum of digits (49), we get a square (278639346769 = 527863²).

The spelling of 5686517281 in words is "five billion, six hundred eighty-six million, five hundred seventeen thousand, two hundred eighty-one".