6658240 has 28 divisors (see below), whose sum is σ = 15855696. Its totient is φ = 2663168.

The previous prime is 6658193. The next prime is 6658243. The reversal of 6658240 is 428566.

It is not an unprimeable number, because it can be changed into a prime (6658243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10084 + ... + 10723.

Almost surely, 2^6658240 is an apocalyptic number.

It is an amenable number.

6658240 is an abundant number, since it is smaller than the sum of its proper divisors (9197456).

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

6658240 is a wasteful number, since it uses less digits than its factorization.

6658240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20824 (or 20814 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6658240 is about 2580.3565645081. The cubic root of 6658240 is about 188.1278743725.

The spelling of 6658240 in words is "six million, six hundred fifty-eight thousand, two hundred forty".