10381663 has 4 divisors (see below), whose sum is σ = 10435648. Its totient is φ = 10327680.

The previous prime is 10381661. The next prime is 10381667. The reversal of 10381663 is 36618301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36618301 = 19 ⋅1927279.

It is a cyclic number.

It is not a de Polignac number, because 10381663 - 2¹ = 10381661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10381661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26703 + ... + 27088.

It is an arithmetic number, because the mean of its divisors is an integer number (2608912).

Almost surely, 2^10381663 is an apocalyptic number.

10381663 is a deficient number, since it is larger than the sum of its proper divisors (53985).

10381663 is an equidigital number, since it uses as much as digits as its factorization.

10381663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53984.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 10381663 is about 3222.0588138642. The cubic root of 10381663 is about 218.1502135040.

Adding to 10381663 its reverse (36618301), we get a palindrome (46999964).

It can be divided in two parts, 1038 and 1663, that added together give a triangular number (2701 = T₇₃).

The spelling of 10381663 in words is "ten million, three hundred eighty-one thousand, six hundred sixty-three".