6888945281 has 8 divisors (see below), whose sum is σ = 7012308480. Its totient is φ = 6766486272.

The previous prime is 6888945253. The next prime is 6888945299. The reversal of 6888945281 is 1825498886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6888945281 is a prime.

It is a super-2 number, since 2×6888945281² = 94915134169224337922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6888945281.

It is not an unprimeable number, because it can be changed into a prime (6888945781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210665 + ... + 241158.

It is an arithmetic number, because the mean of its divisors is an integer number (876538560).

Almost surely, 2^6888945281 is an apocalyptic number.

It is an amenable number.

6888945281 is a deficient number, since it is larger than the sum of its proper divisors (123363199).

6888945281 is a wasteful number, since it uses less digits than its factorization.

6888945281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452095.

The product of its digits is 8847360, while the sum is 59.

The square root of 6888945281 is about 82999.6703668153. The cubic root of 6888945281 is about 1902.7610164032.

The spelling of 6888945281 in words is "six billion, eight hundred eighty-eight million, nine hundred forty-five thousand, two hundred eighty-one".