605587993 has 2 divisors, whose sum is σ = 605587994. Its totient is φ = 605587992.

The previous prime is 605587987. The next prime is 605588023. The reversal of 605587993 is 399785506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425679424 + 179908569 = 20632^2 + 13413^2 .

It is a cyclic number.

It is not a de Polignac number, because 605587993 - 2¹³ = 605579801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 605587993.

It is not a weakly prime, because it can be changed into another prime (605587973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302793996 + 302793997.

It is an arithmetic number, because the mean of its divisors is an integer number (302793997).

Almost surely, 2^605587993 is an apocalyptic number.

It is an amenable number.

605587993 is a deficient number, since it is larger than the sum of its proper divisors (1).

605587993 is an equidigital number, since it uses as much as digits as its factorization.

605587993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 605587993 is about 24608.6975071823. The cubic root of 605587993 is about 846.0429650470.

The spelling of 605587993 in words is "six hundred five million, five hundred eighty-seven thousand, nine hundred ninety-three".