605633257 has 2 divisors, whose sum is σ = 605633258. Its totient is φ = 605633256.

The previous prime is 605633233. The next prime is 605633261. The reversal of 605633257 is 752336506.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415303641 + 190329616 = 20379^2 + 13796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605633257 is a prime.

It is not a weakly prime, because it can be changed into another prime (605633207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302816628 + 302816629.

It is an arithmetic number, because the mean of its divisors is an integer number (302816629).

Almost surely, 2^605633257 is an apocalyptic number.

It is an amenable number.

605633257 is a deficient number, since it is larger than the sum of its proper divisors (1).

605633257 is an equidigital number, since it uses as much as digits as its factorization.

605633257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 37.

The square root of 605633257 is about 24609.6171648403. The cubic root of 605633257 is about 846.0640433682.

The spelling of 605633257 in words is "six hundred five million, six hundred thirty-three thousand, two hundred fifty-seven".