604206023561 has 16 divisors (see below), whose sum is σ = 691602702336. Its totient is φ = 517080008016.

The previous prime is 604206023489. The next prime is 604206023567. The reversal of 604206023561 is 165320602406.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604206023561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (604206023567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42165380 + ... + 42179706.

It is an arithmetic number, because the mean of its divisors is an integer number (43225168896).

Almost surely, 2^604206023561 is an apocalyptic number.

It is an amenable number.

604206023561 is a deficient number, since it is larger than the sum of its proper divisors (87396678775).

604206023561 is a wasteful number, since it uses less digits than its factorization.

604206023561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23348.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 604206023561 its reverse (165320602406), we get a palindrome (769526625967).

The spelling of 604206023561 in words is "six hundred four billion, two hundred six million, twenty-three thousand, five hundred sixty-one".