6733840 has 40 divisors (see below), whose sum is σ = 16045848. Its totient is φ = 2626560.

The previous prime is 6733823. The next prime is 6733841. The reversal of 6733840 is 483376.

It can be written as a sum of positive squares in 4 ways, for example, as 15376 + 6718464 = 124^2 + 2592^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×6733840² = 90689202291200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6733841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2254 + ... + 4306.

Almost surely, 2^6733840 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 6733840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8022924).

6733840 is an abundant number, since it is smaller than the sum of its proper divisors (9312008).

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

6733840 is a wasteful number, since it uses less digits than its factorization.

6733840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6733840 is about 2594.9643542831. The cubic root of 6733840 is about 188.8372197520.

The spelling of 6733840 in words is "six million, seven hundred thirty-three thousand, eight hundred forty".