6660750 has 64 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 1738400.

The previous prime is 6660733. The next prime is 6660751. The reversal of 6660750 is 570666.

6660750 = 166² + 167² + ... + 290².

6660750 is nontrivially palindromic in base 14.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660751) 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 31 ways as a sum of consecutive naturals, for example, 62197 + ... + 62303.

It is an arithmetic number, because the mean of its divisors is an integer number (265356).

Almost surely, 2^6660750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6660750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8491392).

6660750 is an abundant number, since it is smaller than the sum of its proper divisors (10322034).

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

6660750 is a wasteful number, since it uses less digits than its factorization.

6660750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 6660750 is about 2580.8428855705. The cubic root of 6660750 is about 188.1515113316.

The spelling of 6660750 in words is "six million, six hundred sixty thousand, seven hundred fifty".