6730040 has 32 divisors (see below), whose sum is σ = 15219360. Its totient is φ = 2678400.

The previous prime is 6730037. The next prime is 6730043. The reversal of 6730040 is 400376.

It is an interprime number because it is at equal distance from previous prime (6730037) and next prime (6730043).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6729994 and 6730021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6730043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12170 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (475605).

Almost surely, 2^6730040 is an apocalyptic number.

It is an amenable number.

6730040 is an abundant number, since it is smaller than the sum of its proper divisors (8489320).

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

6730040 is a wasteful number, since it uses less digits than its factorization.

6730040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 6730040 is about 2594.2320636366. The cubic root of 6730040 is about 188.8016919077.

The spelling of 6730040 in words is "six million, seven hundred thirty thousand, forty".