10663920 has 80 divisors (see below), whose sum is σ = 36738720. Its totient is φ = 2843136.

The previous prime is 10663903. The next prime is 10663931. The reversal of 10663920 is 2936601.

It is a happy number.

10663920 is a `hidden beast` number, since 1 + 0 + 6 + 639 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×10663920² = 227438379532800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 309 + ... + 4628.

It is an arithmetic number, because the mean of its divisors is an integer number (459234).

Almost surely, 2^10663920 is an apocalyptic number.

10663920 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 10663920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18369360).

10663920 is an abundant number, since it is smaller than the sum of its proper divisors (26074800).

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

10663920 is a wasteful number, since it uses less digits than its factorization.

10663920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 10663920 is about 3265.5658008988. The cubic root of 10663920 is about 220.1095872762.

The spelling of 10663920 in words is "ten million, six hundred sixty-three thousand, nine hundred twenty".