6900488820 has 120 divisors (see below), whose sum is σ = 21870752904. Its totient is φ = 1821118464.

The previous prime is 6900488813. The next prime is 6900488851. The reversal of 6900488820 is 288840096.

It is a happy number.

6900488820 is a `hidden beast` number, since 6 + 90 + 0 + 488 + 82 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1242139536 + 5658349284 = 35244^2 + 75222^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 135184 + ... + 179096.

Almost surely, 2^6900488820 is an apocalyptic number.

6900488820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6900488820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10935376452).

6900488820 is an abundant number, since it is smaller than the sum of its proper divisors (14970264084).

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

6900488820 is a wasteful number, since it uses less digits than its factorization.

6900488820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44031 (or 44020 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 6900488820 is about 83069.1809277063. The cubic root of 6900488820 is about 1903.8232176597.

The spelling of 6900488820 in words is "six billion, nine hundred million, four hundred eighty-eight thousand, eight hundred twenty".