6630240 has 96 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 1672704.

The previous prime is 6630229. The next prime is 6630257. The reversal of 6630240 is 420366.

It is a tau number, because it is divible by the number of its divisors (96).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8757 + ... + 9483.

It is an arithmetic number, because the mean of its divisors is an integer number (229320).

Almost surely, 2^6630240 is an apocalyptic number.

6630240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6630240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11007360).

6630240 is an abundant number, since it is smaller than the sum of its proper divisors (15384480).

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

6630240 is a wasteful number, since it uses less digits than its factorization.

6630240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 6630240 is about 2574.9252416332. The cubic root of 6630240 is about 187.8637914853.

Adding to 6630240 its sum of digits (21), we get a triangular number (6630261 = T₃₆₄₁).

The spelling of 6630240 in words is "six million, six hundred thirty thousand, two hundred forty".