6693641280 has 224 divisors, whose sum is σ = 23674913280. Its totient is φ = 1780346880.

The previous prime is 6693641261. The next prime is 6693641281. The reversal of 6693641280 is 821463966.

6693641280 is a `hidden beast` number, since 6 + 6 + 9 + 364 + 1 + 280 = 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 (6693641281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4500697 + ... + 4502183.

Almost surely, 2^6693641280 is an apocalyptic number.

6693641280 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 6693641280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11837456640).

6693641280 is an abundant number, since it is smaller than the sum of its proper divisors (16981272000).

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

6693641280 is a wasteful number, since it uses less digits than its factorization.

6693641280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 6693641280 is about 81814.6764339993. The cubic root of 6693641280 is about 1884.6070501093.

The spelling of 6693641280 in words is "six billion, six hundred ninety-three million, six hundred forty-one thousand, two hundred eighty".