605237681 has 2 divisors, whose sum is σ = 605237682. Its totient is φ = 605237680.

The previous prime is 605237653. The next prime is 605237693. The reversal of 605237681 is 186732506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455395600 + 149842081 = 21340^2 + 12241^2 .

It is a cyclic number.

It is not a de Polignac number, because 605237681 - 2¹⁸ = 604975537 is a prime.

It is a super-2 number, since 2×605237681² = 732625301004515522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (605237081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302618840 + 302618841.

It is an arithmetic number, because the mean of its divisors is an integer number (302618841).

Almost surely, 2^605237681 is an apocalyptic number.

It is an amenable number.

605237681 is a deficient number, since it is larger than the sum of its proper divisors (1).

605237681 is an equidigital number, since it uses as much as digits as its factorization.

605237681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 605237681 is about 24601.5788314490. The cubic root of 605237681 is about 845.8797979139.

The spelling of 605237681 in words is "six hundred five million, two hundred thirty-seven thousand, six hundred eighty-one".