6555061565 has 16 divisors (see below), whose sum is σ = 8651397888. Its totient is φ = 4737665856.

The previous prime is 6555061561. The next prime is 6555061607. The reversal of 6555061565 is 5651605556.

It is a cyclic number.

It is not a de Polignac number, because 6555061565 - 2² = 6555061561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555061561) 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, 1069787 + ... + 1075896.

It is an arithmetic number, because the mean of its divisors is an integer number (540712368).

Almost surely, 2^6555061565 is an apocalyptic number.

6555061565 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6555061565 is a deficient number, since it is larger than the sum of its proper divisors (2096336323).

6555061565 is a wasteful number, since it uses less digits than its factorization.

6555061565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145748.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 6555061565 is about 80963.3346954039. The cubic root of 6555061565 is about 1871.5104580658.

The spelling of 6555061565 in words is "six billion, five hundred fifty-five million, sixty-one thousand, five hundred sixty-five".