6818740 has 12 divisors (see below), whose sum is σ = 14319396. Its totient is φ = 2727488.

The previous prime is 6818737. The next prime is 6818743. The reversal of 6818740 is 478186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6818737) and next prime (6818743).

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 5044516 = 1332^2 + 2246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6818696 and 6818705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170449 + ... + 170488.

It is an arithmetic number, because the mean of its divisors is an integer number (1193283).

Almost surely, 2^6818740 is an apocalyptic number.

It is an amenable number.

6818740 is an abundant number, since it is smaller than the sum of its proper divisors (7500656).

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

6818740 is a wasteful number, since it uses less digits than its factorization.

6818740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340946 (or 340944 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 6818740 is about 2611.2717208288. The cubic root of 6818740 is about 189.6275251273.

The spelling of 6818740 in words is "six million, eight hundred eighteen thousand, seven hundred forty".