6615695520 has 576 divisors, whose sum is σ = 28148117760. Its totient is φ = 1421328384.

The previous prime is 6615695501. The next prime is 6615695521. The reversal of 6615695520 is 255965166.

6615695520 is a `hidden beast` number, since 6 + 61 + 5 + 69 + 5 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6615695521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8738982 + ... + 8739738.

It is an arithmetic number, because the mean of its divisors is an integer number (48868260).

Almost surely, 2^6615695520 is an apocalyptic number.

6615695520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6615695520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14074058880).

6615695520 is an abundant number, since it is smaller than the sum of its proper divisors (21532422240).

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

6615695520 is a wasteful number, since it uses less digits than its factorization.

6615695520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 6615695520 is about 81336.9259315841. The cubic root of 6615695520 is about 1877.2632126973.

The spelling of 6615695520 in words is "six billion, six hundred fifteen million, six hundred ninety-five thousand, five hundred twenty".