5657467681 has 2 divisors, whose sum is σ = 5657467682. Its totient is φ = 5657467680.

The previous prime is 5657467679. The next prime is 5657467703. The reversal of 5657467681 is 1867647565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5657446656 + 21025 = 75216^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 5657467681 - 2¹ = 5657467679 is a prime.

It is a super-2 number, since 2×5657467681² = 64013881123119035522, which contains 22 as substring.

Together with 5657467679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5657467601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828733840 + 2828733841.

It is an arithmetic number, because the mean of its divisors is an integer number (2828733841).

Almost surely, 2^5657467681 is an apocalyptic number.

It is an amenable number.

5657467681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5657467681 is an equidigital number, since it uses as much as digits as its factorization.

5657467681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 55.

The square root of 5657467681 is about 75216.1397640161. The cubic root of 5657467681 is about 1781.8618402252.

The spelling of 5657467681 in words is "five billion, six hundred fifty-seven million, four hundred sixty-seven thousand, six hundred eighty-one".