10016661 has 16 divisors (see below), whose sum is σ = 14031360. Its totient is φ = 6343920.

The previous prime is 10016623. The next prime is 10016681. The reversal of 10016661 is 16661001.

10016661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10016661 - 2⁷ = 10016533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10016681) 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 15 ways as a sum of consecutive naturals, for example, 11946 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (876960).

Almost surely, 2^10016661 is an apocalyptic number.

It is an amenable number.

10016661 is a deficient number, since it is larger than the sum of its proper divisors (4014699).

10016661 is a wasteful number, since it uses less digits than its factorization.

10016661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 10016661 is about 3164.9108992198. The cubic root of 10016661 is about 215.5630527362.

Adding to 10016661 its reverse (16661001), we get a palindrome (26677662).

It can be divided in two parts, 100 and 16661, that added together give a palindrome (16761).

The spelling of 10016661 in words is "ten million, sixteen thousand, six hundred sixty-one".