605116561 has 8 divisors (see below), whose sum is σ = 694841024. Its totient is φ = 516211920.

The previous prime is 605116517. The next prime is 605116571. The reversal of 605116561 is 165611506.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 605116561 - 2⁷ = 605116433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605116571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203370 + ... + 206323.

It is an arithmetic number, because the mean of its divisors is an integer number (86855128).

Almost surely, 2^605116561 is an apocalyptic number.

It is an amenable number.

605116561 is a deficient number, since it is larger than the sum of its proper divisors (89724463).

605116561 is a wasteful number, since it uses less digits than its factorization.

605116561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409911.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 605116561 is about 24599.1170776514. The cubic root of 605116561 is about 845.8233684046.

The spelling of 605116561 in words is "six hundred five million, one hundred sixteen thousand, five hundred sixty-one".