6888813820 has 24 divisors (see below), whose sum is σ = 16533153504. Its totient is φ = 2361878976.

The previous prime is 6888813791. The next prime is 6888813821. The reversal of 6888813820 is 283188886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6888813821) 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, 24602767 + ... + 24603046.

It is an arithmetic number, because the mean of its divisors is an integer number (688881396).

Almost surely, 2^6888813820 is an apocalyptic number.

It is an amenable number.

6888813820 is an abundant number, since it is smaller than the sum of its proper divisors (9644339684).

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

6888813820 is a wasteful number, since it uses less digits than its factorization.

6888813820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49205829 (or 49205827 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 52.

The square root of 6888813820 is about 82998.8784261571. The cubic root of 6888813820 is about 1902.7489129317.

The spelling of 6888813820 in words is "six billion, eight hundred eighty-eight million, eight hundred thirteen thousand, eight hundred twenty".