6884720840 has 32 divisors (see below), whose sum is σ = 15501413880. Its totient is φ = 2751969792.

The previous prime is 6884720837. The next prime is 6884720867. The reversal of 6884720840 is 480274886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6582725956 + 301994884 = 81134^2 + 17378^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109 + ... + 117348.

Almost surely, 2^6884720840 is an apocalyptic number.

It is an amenable number.

6884720840 is an abundant number, since it is smaller than the sum of its proper divisors (8616693040).

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

6884720840 is a wasteful number, since it uses less digits than its factorization.

6884720840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119921 (or 119917 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 6884720840 is about 82974.2179234008. The cubic root of 6884720840 is about 1902.3719996560.

The spelling of 6884720840 in words is "six billion, eight hundred eighty-four million, seven hundred twenty thousand, eight hundred forty".