6659340480 has 280 divisors, whose sum is σ = 25511924592. Its totient is φ = 1639139328.

The previous prime is 6659340461. The next prime is 6659340511. The reversal of 6659340480 is 840439566.

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 39 ways as a sum of consecutive naturals, for example, 327079 + ... + 346841.

Almost surely, 2^6659340480 is an apocalyptic number.

6659340480 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 6659340480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12755962296).

6659340480 is an abundant number, since it is smaller than the sum of its proper divisors (18852584112).

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

6659340480 is a wasteful number, since it uses less digits than its factorization.

6659340480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19805 (or 19786 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6659340480 is about 81604.7822128091. The cubic root of 6659340480 is about 1881.3823845058.

The spelling of 6659340480 in words is "six billion, six hundred fifty-nine million, three hundred forty thousand, four hundred eighty".