6698340 has 144 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 1520640.

The previous prime is 6698339. The next prime is 6698381. The reversal of 6698340 is 438966.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6698295 and 6698304.

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 47 ways as a sum of consecutive naturals, for example, 33561 + ... + 33759.

It is an arithmetic number, because the mean of its divisors is an integer number (163800).

Almost surely, 2^6698340 is an apocalyptic number.

6698340 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 6698340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11793600).

6698340 is an abundant number, since it is smaller than the sum of its proper divisors (16888860).

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

6698340 is a wasteful number, since it uses less digits than its factorization.

6698340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6698340 is about 2588.1151442701. The cubic root of 6698340 is about 188.5047924727.

It can be divided in two parts, 669 and 8340, that added together give a palindrome (9009).

The spelling of 6698340 in words is "six million, six hundred ninety-eight thousand, three hundred forty".