6616937520 has 160 divisors (see below), whose sum is σ = 23347880640. Its totient is φ = 1721456640.

The previous prime is 6616937471. The next prime is 6616937531. The reversal of 6616937520 is 257396166.

6616937520 is a `hidden beast` number, since 6 + 61 + 69 + 3 + 7 + 520 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51202 + ... + 125918.

It is an arithmetic number, because the mean of its divisors is an integer number (145924254).

Almost surely, 2^6616937520 is an apocalyptic number.

6616937520 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 6616937520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11673940320).

6616937520 is an abundant number, since it is smaller than the sum of its proper divisors (16730943120).

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

6616937520 is a wasteful number, since it uses less digits than its factorization.

6616937520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74780 (or 74768 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 6616937520 is about 81344.5604819400. The cubic root of 6616937520 is about 1877.3806815768.

The spelling of 6616937520 in words is "six billion, six hundred sixteen million, nine hundred thirty-seven thousand, five hundred twenty".