6918040 has 32 divisors (see below), whose sum is σ = 15734880. Its totient is φ = 2737152.

The previous prime is 6918029. The next prime is 6918047. The reversal of 6918040 is 408196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6918047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2989 + ... + 4771.

It is an arithmetic number, because the mean of its divisors is an integer number (491715).

Almost surely, 2^6918040 is an apocalyptic number.

It is an amenable number.

6918040 is an abundant number, since it is smaller than the sum of its proper divisors (8816840).

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

6918040 is a wasteful number, since it uses less digits than its factorization.

6918040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 6918040 is about 2630.2167211087. The cubic root of 6918040 is about 190.5435956282.

The spelling of 6918040 in words is "six million, nine hundred eighteen thousand, forty".