10116661 has 6 divisors (see below), whose sum is σ = 10252662. Its totient is φ = 9982440.

The previous prime is 10116641. The next prime is 10116677. The reversal of 10116661 is 16661101.

It can be written as a sum of positive squares in only one way, i.e., 9492561 + 624100 = 3081^2 + 790^2 .

It is not a de Polignac number, because 10116661 - 2⁵ = 10116629 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 (10116641) 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 5 ways as a sum of consecutive naturals, for example, 5431 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (1708777).

Almost surely, 2^10116661 is an apocalyptic number.

It is an amenable number.

10116661 is a deficient number, since it is larger than the sum of its proper divisors (136001).

10116661 is an frugal number, since it uses more digits than its factorization.

10116661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 10116661 is about 3180.6698979932. The cubic root of 10116661 is about 216.2780270400.

Adding to 10116661 its reverse (16661101), we get a palindrome (26777762).

The spelling of 10116661 in words is "ten million, one hundred sixteen thousand, six hundred sixty-one".