6798990 has 48 divisors (see below), whose sum is σ = 17945424. Its totient is φ = 1647360.

The previous prime is 6798971. The next prime is 6798991. The reversal of 6798990 is 998976.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6798991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2694 + ... + 4566.

It is an arithmetic number, because the mean of its divisors is an integer number (373863).

Almost surely, 2^6798990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6798990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8972712).

6798990 is an abundant number, since it is smaller than the sum of its proper divisors (11146434).

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

6798990 is a wasteful number, since it uses less digits than its factorization.

6798990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 6798990 is about 2607.4872962298. The cubic root of 6798990 is about 189.4442671598. Note that the first 3 decimals are identical.

It can be divided in two parts, 679 and 8990, that added together give a palindrome (9669).

The spelling of 6798990 in words is "six million, seven hundred ninety-eight thousand, nine hundred ninety".