6918740 has 12 divisors (see below), whose sum is σ = 14529396. Its totient is φ = 2767488.

The previous prime is 6918739. The next prime is 6918749. The reversal of 6918740 is 478196.

It can be written as a sum of positive squares in 2 ways, for example, as 4268356 + 2650384 = 2066^2 + 1628^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6918740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918749) 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, 172949 + ... + 172988.

It is an arithmetic number, because the mean of its divisors is an integer number (1210783).

Almost surely, 2^6918740 is an apocalyptic number.

It is an amenable number.

6918740 is an abundant number, since it is smaller than the sum of its proper divisors (7610656).

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

6918740 is a wasteful number, since it uses less digits than its factorization.

6918740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345946 (or 345944 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 6918740 is about 2630.3497866253. The cubic root of 6918740 is about 190.5500221121.

The spelling of 6918740 in words is "six million, nine hundred eighteen thousand, seven hundred forty".