6681011628 has 48 divisors (see below), whose sum is σ = 16704938880. Its totient is φ = 2070745344.

The previous prime is 6681011581. The next prime is 6681011639. The reversal of 6681011628 is 8261101866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180358 + ... + 214221.

It is an arithmetic number, because the mean of its divisors is an integer number (348019560).

Almost surely, 2^6681011628 is an apocalyptic number.

6681011628 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6681011628 is an abundant number, since it is smaller than the sum of its proper divisors (10023927252).

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

6681011628 is a wasteful number, since it uses less digits than its factorization.

6681011628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394686 (or 394684 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 6681011628 is about 81737.4554778897. The cubic root of 6681011628 is about 1883.4210032404.

The spelling of 6681011628 in words is "six billion, six hundred eighty-one million, eleven thousand, six hundred twenty-eight".