6920540 has 48 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 2479680.

The previous prime is 6920521. The next prime is 6920569. The reversal of 6920540 is 450296.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18071 + ... + 18449.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^6920540 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 6920540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8043840).

6920540 is an abundant number, since it is smaller than the sum of its proper divisors (9167140).

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

6920540 is a wasteful number, since it uses less digits than its factorization.

6920540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6920540 is about 2630.6919241903. The cubic root of 6920540 is about 190.5665453663.

The spelling of 6920540 in words is "six million, nine hundred twenty thousand, five hundred forty".