6698820 has 48 divisors (see below), whose sum is σ = 18966528. Its totient is φ = 1766400.

The previous prime is 6698807. The next prime is 6698831. The reversal of 6698820 is 288966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5245 + ... + 6395.

It is an arithmetic number, because the mean of its divisors is an integer number (395136).

Almost surely, 2^6698820 is an apocalyptic number.

6698820 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 6698820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9483264).

6698820 is an abundant number, since it is smaller than the sum of its proper divisors (12267708).

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

6698820 is a wasteful number, since it uses less digits than its factorization.

6698820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 6698820 is about 2588.2078741863. The cubic root of 6698820 is about 188.5092950877.

The spelling of 6698820 in words is "six million, six hundred ninety-eight thousand, eight hundred twenty".