6920440 has 32 divisors (see below), whose sum is σ = 16076160. Its totient is φ = 2678400.

The previous prime is 6920429. The next prime is 6920449. The reversal of 6920440 is 440296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6920449) 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, 1551 + ... + 4030.

It is an arithmetic number, because the mean of its divisors is an integer number (502380).

Almost surely, 2^6920440 is an apocalyptic number.

It is an amenable number.

6920440 is an abundant number, since it is smaller than the sum of its proper divisors (9155720).

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

6920440 is a wasteful number, since it uses less digits than its factorization.

6920440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623 (or 5619 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6920440 is about 2630.6729177152. The cubic root of 6920440 is about 190.5656274829.

It can be divided in two parts, 69 and 20440, that multiplied together give a triangular number (1410360 = T₁₆₇₉).

The spelling of 6920440 in words is "six million, nine hundred twenty thousand, four hundred forty".