7605565561 has 32 divisors (see below), whose sum is σ = 8592998400. Its totient is φ = 6672818880.

The previous prime is 7605565543. The next prime is 7605565567. The reversal of 7605565561 is 1655655067.

7605565561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7605565561 - 2⁹ = 7605565049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7605565567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10291330 + ... + 10292068.

It is an arithmetic number, because the mean of its divisors is an integer number (268531200).

Almost surely, 2^7605565561 is an apocalyptic number.

It is an amenable number.

7605565561 is a deficient number, since it is larger than the sum of its proper divisors (987432839).

7605565561 is a wasteful number, since it uses less digits than its factorization.

7605565561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 945000, while the sum is 46.

The square root of 7605565561 is about 87209.8937105189. The cubic root of 7605565561 is about 1966.5749586876.

The spelling of 7605565561 in words is "seven billion, six hundred five million, five hundred sixty-five thousand, five hundred sixty-one".