10668656 has 40 divisors (see below), whose sum is σ = 22279824. Its totient is φ = 4930560.

The previous prime is 10668653. The next prime is 10668659. The reversal of 10668656 is 65686601.

It is an interprime number because it is at equal distance from previous prime (10668653) and next prime (10668659).

It is a super-2 number, since 2×10668656² = 227640441692672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10668653) 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, 16271 + ... + 16913.

Almost surely, 2^10668656 is an apocalyptic number.

10668656 is a gapful number since it is divisible by the number (16) 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 10668656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11139912).

10668656 is an abundant number, since it is smaller than the sum of its proper divisors (11611168).

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

10668656 is a wasteful number, since it uses less digits than its factorization.

10668656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 10668656 is about 3266.2908627371. The cubic root of 10668656 is about 220.1421670630.

The spelling of 10668656 in words is "ten million, six hundred sixty-eight thousand, six hundred fifty-six".