10103661 has 12 divisors (see below), whose sum is σ = 15452892. Its totient is φ = 6339456.

The previous prime is 10103659. The next prime is 10103699. The reversal of 10103661 is 16630101.

10103661 is a `hidden beast` number, since 1 + 0 + 1 + 0 + 3 + 661 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8590761 + 1512900 = 2931^2 + 1230^2 .

It is not a de Polignac number, because 10103661 - 2¹ = 10103659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103641) 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 11 ways as a sum of consecutive naturals, for example, 32866 + ... + 33171.

It is an arithmetic number, because the mean of its divisors is an integer number (1287741).

Almost surely, 2^10103661 is an apocalyptic number.

It is an amenable number.

10103661 is a deficient number, since it is larger than the sum of its proper divisors (5349231).

10103661 is a wasteful number, since it uses less digits than its factorization.

10103661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66060 (or 66057 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 10103661 is about 3178.6256464076. The cubic root of 10103661 is about 216.1853475967.

Adding to 10103661 its reverse (16630101), we get a palindrome (26733762).

The spelling of 10103661 in words is "ten million, one hundred three thousand, six hundred sixty-one".