6650615560 has 32 divisors (see below), whose sum is σ = 15844115160. Its totient is φ = 2503760896.

The previous prime is 6650615557. The next prime is 6650615567. The reversal of 6650615560 is 655160566.

It can be written as a sum of positive squares in 4 ways, for example, as 4989727044 + 1660888516 = 70638^2 + 40754^2 .

It is a super-2 number, since 2×6650615560² = 88461374653828227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (6650615567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4889479 + ... + 4890838.

Almost surely, 2^6650615560 is an apocalyptic number.

It is an amenable number.

6650615560 is an abundant number, since it is smaller than the sum of its proper divisors (9193499600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6650615560 is a wasteful number, since it uses less digits than its factorization.

6650615560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9780345 (or 9780341 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 6650615560 is about 81551.3063046816. The cubic root of 6650615560 is about 1880.5603769370.

The spelling of 6650615560 in words is "six billion, six hundred fifty million, six hundred fifteen thousand, five hundred sixty".