604208993 has 2 divisors, whose sum is σ = 604208994. Its totient is φ = 604208992.

The previous prime is 604208963. The next prime is 604209007. The reversal of 604208993 is 399802406.

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., 327718609 + 276490384 = 18103^2 + 16628^2 .

It is a cyclic number.

It is not a de Polignac number, because 604208993 - 2²⁰ = 603160417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 604208993.

It is not a weakly prime, because it can be changed into another prime (604208903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302104496 + 302104497.

It is an arithmetic number, because the mean of its divisors is an integer number (302104497).

Almost surely, 2^604208993 is an apocalyptic number.

It is an amenable number.

604208993 is a deficient number, since it is larger than the sum of its proper divisors (1).

604208993 is an equidigital number, since it uses as much as digits as its factorization.

604208993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 604208993 is about 24580.6629894313. The cubic root of 604208993 is about 845.4002949185.

The spelling of 604208993 in words is "six hundred four million, two hundred eight thousand, nine hundred ninety-three".