6888634021 has 8 divisors (see below), whose sum is σ = 7279130880. Its totient is φ = 6505719792.

The previous prime is 6888634009. The next prime is 6888634061. The reversal of 6888634021 is 1204368886.

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

It is a cyclic number.

It is not a de Polignac number, because 6888634021 - 2⁹ = 6888633509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6888634001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893790 + ... + 1897423.

It is an arithmetic number, because the mean of its divisors is an integer number (909891360).

Almost surely, 2^6888634021 is an apocalyptic number.

It is an amenable number.

6888634021 is a deficient number, since it is larger than the sum of its proper divisors (390496859).

6888634021 is a wasteful number, since it uses less digits than its factorization.

6888634021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791315.

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 6888634021 is about 82997.7952779470. The cubic root of 6888634021 is about 1902.7323587838.

The spelling of 6888634021 in words is "six billion, eight hundred eighty-eight million, six hundred thirty-four thousand, twenty-one".