605515606061 has 2 divisors, whose sum is σ = 605515606062. Its totient is φ = 605515606060.

The previous prime is 605515606057. The next prime is 605515606067. The reversal of 605515606061 is 160606515506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519538224100 + 85977381961 = 720790^2 + 293219^2 .

It is a cyclic number.

It is not a de Polignac number, because 605515606061 - 2² = 605515606057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (605515606067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302757803030 + 302757803031.

It is an arithmetic number, because the mean of its divisors is an integer number (302757803031).

Almost surely, 2^605515606061 is an apocalyptic number.

It is an amenable number.

605515606061 is a deficient number, since it is larger than the sum of its proper divisors (1).

605515606061 is an equidigital number, since it uses as much as digits as its factorization.

605515606061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 605515606061 in words is "six hundred five billion, five hundred fifteen million, six hundred six thousand, sixty-one".