6990340 has 48 divisors (see below), whose sum is σ = 17136000. Its totient is φ = 2394336.

The previous prime is 6990337. The next prime is 6990341. The reversal of 6990340 is 430996.

It is not an unprimeable number, because it can be changed into a prime (6990341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6351 + ... + 7369.

It is an arithmetic number, because the mean of its divisors is an integer number (357000).

Almost surely, 2^6990340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6990340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8568000).

6990340 is an abundant number, since it is smaller than the sum of its proper divisors (10145660).

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

6990340 is a wasteful number, since it uses less digits than its factorization.

6990340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 6990340 is about 2643.9251124039. The cubic root of 6990340 is about 191.2050829341.

It can be divided in two parts, 69 and 90340, that added together give a palindrome (90409).

The spelling of 6990340 in words is "six million, nine hundred ninety thousand, three hundred forty".