10661656 has 16 divisors (see below), whose sum is σ = 20032200. Its totient is φ = 5319744.

The previous prime is 10661653. The next prime is 10661671. The reversal of 10661656 is 65616601.

It is a super-2 number, since 2×10661656² = 227341817324672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661653) 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, 3876 + ... + 6028.

Almost surely, 2^10661656 is an apocalyptic number.

It is an amenable number.

10661656 is a deficient number, since it is larger than the sum of its proper divisors (9370544).

10661656 is a wasteful number, since it uses less digits than its factorization.

10661656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 10661656 is about 3265.2191350658. The cubic root of 10661656 is about 220.0940094094.

The spelling of 10661656 in words is "ten million, six hundred sixty-one thousand, six hundred fifty-six".