605819897 has 2 divisors, whose sum is σ = 605819898. Its totient is φ = 605819896.

The previous prime is 605819881. The next prime is 605819899. The reversal of 605819897 is 798918506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453519616 + 152300281 = 21296^2 + 12341^2 .

It is a cyclic number.

It is not a de Polignac number, because 605819897 - 2⁴ = 605819881 is a prime.

Together with 605819899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (605819899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302909948 + 302909949.

It is an arithmetic number, because the mean of its divisors is an integer number (302909949).

Almost surely, 2^605819897 is an apocalyptic number.

It is an amenable number.

605819897 is a deficient number, since it is larger than the sum of its proper divisors (1).

605819897 is an equidigital number, since it uses as much as digits as its factorization.

605819897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 605819897 is about 24613.4088862148. The cubic root of 605819897 is about 846.1509458915.

The spelling of 605819897 in words is "six hundred five million, eight hundred nineteen thousand, eight hundred ninety-seven".