5657342681 has 4 divisors (see below), whose sum is σ = 5657686692. Its totient is φ = 5656998672.

The previous prime is 5657342659. The next prime is 5657342711. The reversal of 5657342681 is 1862437565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4145299456 + 1512043225 = 64384^2 + 38885^2 .

It is a cyclic number.

It is not a de Polignac number, because 5657342681 - 2¹⁸ = 5657080537 is a prime.

It is a super-2 number, since 2×5657342681² = 64011052420528535522, 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 (5657342611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146030 + ... + 180663.

It is an arithmetic number, because the mean of its divisors is an integer number (1414421673).

Almost surely, 2^5657342681 is an apocalyptic number.

It is an amenable number.

5657342681 is a deficient number, since it is larger than the sum of its proper divisors (344011).

5657342681 is a wasteful number, since it uses less digits than its factorization.

5657342681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344010.

The product of its digits is 1209600, while the sum is 47.

The square root of 5657342681 is about 75215.3088207447. The cubic root of 5657342681 is about 1781.8487168996.

The spelling of 5657342681 in words is "five billion, six hundred fifty-seven million, three hundred forty-two thousand, six hundred eighty-one".