10668640 has 48 divisors (see below), whose sum is σ = 25446960. Its totient is φ = 4226560.

The previous prime is 10668631. The next prime is 10668641. The reversal of 10668640 is 4686601.

It is a super-2 number, since 2×10668640² = 227639758899200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10668641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20706 + ... + 21214.

It is an arithmetic number, because the mean of its divisors is an integer number (530145).

Almost surely, 2^10668640 is an apocalyptic number.

10668640 is a gapful number since it is divisible by the number (10) 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 10668640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12723480).

10668640 is an abundant number, since it is smaller than the sum of its proper divisors (14778320).

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

10668640 is a wasteful number, since it uses less digits than its factorization.

10668640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 10668640 is about 3266.2884134748. The cubic root of 10668640 is about 220.1420570124.

The spelling of 10668640 in words is "ten million, six hundred sixty-eight thousand, six hundred forty".