6652808640 has 560 divisors, whose sum is σ = 24925519872. Its totient is φ = 1682601984.

The previous prime is 6652808579. The next prime is 6652808647. The reversal of 6652808640 is 468082566.

6652808640 is a `hidden beast` number, since 6 + 6 + 528 + 0 + 86 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6652808647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 52384257 + ... + 52384383.

Almost surely, 2^6652808640 is an apocalyptic number.

6652808640 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 6652808640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12462759936).

6652808640 is an abundant number, since it is smaller than the sum of its proper divisors (18272711232).

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

6652808640 is a wasteful number, since it uses less digits than its factorization.

6652808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 6652808640 is about 81564.7512103114. The cubic root of 6652808640 is about 1880.7670628730.

The spelling of 6652808640 in words is "six billion, six hundred fifty-two million, eight hundred eight thousand, six hundred forty".