6655459561 has 9 divisors (see below), whose sum is σ = 6959370621. Its totient is φ = 6364296972.

The previous prime is 6655459553. The next prime is 6655459571. The reversal of 6655459561 is 1659545566.

The square root of 6655459561 is 81581.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6655459561 - 2³ = 6655459553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6655459499 and 6655459508.

It is not an unprimeable number, because it can be changed into a prime (6655459571) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1874590 + ... + 1878136.

Almost surely, 2^6655459561 is an apocalyptic number.

6655459561 is the 81581-st square number.

6655459561 is the 40791-st centered octagonal number.

It is an amenable number.

6655459561 is a deficient number, since it is larger than the sum of its proper divisors (303911060).

6655459561 is an frugal number, since it uses more digits than its factorization.

6655459561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140 (or 3570 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 52.

The cubic root of 6655459561 is about 1881.0168372214.

The spelling of 6655459561 in words is "six billion, six hundred fifty-five million, four hundred fifty-nine thousand, five hundred sixty-one".