6890240 has 72 divisors (see below), whose sum is σ = 18886560. Its totient is φ = 2359296.

The previous prime is 6890239. The next prime is 6890243. The reversal of 6890240 is 420986.

It is not an unprimeable number, because it can be changed into a prime (6890243) 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, 8576 + ... + 9344.

Almost surely, 2^6890240 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 6890240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9443280).

6890240 is an abundant number, since it is smaller than the sum of its proper divisors (11996320).

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

6890240 is an equidigital number, since it uses as much as digits as its factorization.

6890240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 6890240 is about 2624.9266656423. The cubic root of 6890240 is about 190.2880211549.

The spelling of 6890240 in words is "six million, eight hundred ninety thousand, two hundred forty".