605631893 has 2 divisors, whose sum is σ = 605631894. Its totient is φ = 605631892.

The previous prime is 605631797. The next prime is 605631899. The reversal of 605631893 is 398136506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536292964 + 69338929 = 23158^2 + 8327^2 .

It is a cyclic number.

It is not a de Polignac number, because 605631893 - 2¹⁴ = 605615509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 605631893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605631899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302815946 + 302815947.

It is an arithmetic number, because the mean of its divisors is an integer number (302815947).

Almost surely, 2^605631893 is an apocalyptic number.

It is an amenable number.

605631893 is a deficient number, since it is larger than the sum of its proper divisors (1).

605631893 is an equidigital number, since it uses as much as digits as its factorization.

605631893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 605631893 is about 24609.5894520815. The cubic root of 605631893 is about 846.0634082026.

The spelling of 605631893 in words is "six hundred five million, six hundred thirty-one thousand, eight hundred ninety-three".