10663644 has 12 divisors (see below), whose sum is σ = 24881864. Its totient is φ = 3554544.

The previous prime is 10663643. The next prime is 10663661. The reversal of 10663644 is 44636601.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×10663644² = 227426606717472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10663643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444307 + ... + 444330.

Almost surely, 2^10663644 is an apocalyptic number.

It is an amenable number.

10663644 is an abundant number, since it is smaller than the sum of its proper divisors (14218220).

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

10663644 is a wasteful number, since it uses less digits than its factorization.

10663644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888644 (or 888642 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 10663644 is about 3265.5235414861. The cubic root of 10663644 is about 220.1076883256.

The spelling of 10663644 in words is "ten million, six hundred sixty-three thousand, six hundred forty-four".