610605561 has 16 divisors (see below), whose sum is σ = 836988608. Its totient is φ = 395668800.

The previous prime is 610605559. The next prime is 610605571. The reversal of 610605561 is 165506016.

610605561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 610605561 - 2¹ = 610605559 is a prime.

It is a super-2 number, since 2×610605561² = 745678302248249442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610605511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141171 + ... + 145431.

It is an arithmetic number, because the mean of its divisors is an integer number (52311788).

Almost surely, 2^610605561 is an apocalyptic number.

It is an amenable number.

610605561 is a deficient number, since it is larger than the sum of its proper divisors (226383047).

610605561 is a wasteful number, since it uses less digits than its factorization.

610605561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 610605561 is about 24710.4342535699. The cubic root of 610605561 is about 848.3731563664.

The spelling of 610605561 in words is "six hundred ten million, six hundred five thousand, five hundred sixty-one".