6919040 has 64 divisors (see below), whose sum is σ = 17442000. Its totient is φ = 2617344.

The previous prime is 6919039. The next prime is 6919043. The reversal of 6919040 is 409196.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×6919040² = 95746229043200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6918994 and 6919012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6919043) 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, 11876 + ... + 12444.

Almost surely, 2^6919040 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 6919040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8721000).

6919040 is an abundant number, since it is smaller than the sum of its proper divisors (10522960).

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

6919040 is a wasteful number, since it uses less digits than its factorization.

6919040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 6919040 is about 2630.4068126432. The cubic root of 6919040 is about 190.5527761868.

The spelling of 6919040 in words is "six million, nine hundred nineteen thousand, forty".