6641240 has 16 divisors (see below), whose sum is σ = 14942880. Its totient is φ = 2656480.

The previous prime is 6641231. The next prime is 6641249. The reversal of 6641240 is 421466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6641231) and next prime (6641249).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641249) 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 3 ways as a sum of consecutive naturals, for example, 82976 + ... + 83055.

It is an arithmetic number, because the mean of its divisors is an integer number (933930).

Almost surely, 2^6641240 is an apocalyptic number.

It is an amenable number.

6641240 is an abundant number, since it is smaller than the sum of its proper divisors (8301640).

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

6641240 is a wasteful number, since it uses less digits than its factorization.

6641240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166042 (or 166038 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6641240 is about 2577.0603407759. The cubic root of 6641240 is about 187.9676268386.

The spelling of 6641240 in words is "six million, six hundred forty-one thousand, two hundred forty".