6605551520 has 48 divisors (see below), whose sum is σ = 15780993480. Its totient is φ = 2612527104.

The previous prime is 6605551489. The next prime is 6605551523. The reversal of 6605551520 is 251555066.

It can be written as a sum of positive squares in 4 ways, for example, as 2205617296 + 4399934224 = 46964^2 + 66332^2 .

It is not an unprimeable number, because it can be changed into a prime (6605551523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217697 + ... + 246176.

Almost surely, 2^6605551520 is an apocalyptic number.

It is an amenable number.

6605551520 is an abundant number, since it is smaller than the sum of its proper divisors (9175441960).

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

6605551520 is a wasteful number, since it uses less digits than its factorization.

6605551520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463977 (or 463969 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 6605551520 is about 81274.5441082262. The cubic root of 6605551520 is about 1876.3032380796.

The spelling of 6605551520 in words is "six billion, six hundred five million, five hundred fifty-one thousand, five hundred twenty".