16016661 has 12 divisors (see below), whose sum is σ = 23181600. Its totient is φ = 10656360.

The previous prime is 16016659. The next prime is 16016701. The reversal of 16016661 is 16661061.

16016661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16016661 - 2¹ = 16016659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16016621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3906 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (1931800).

Almost surely, 2^16016661 is an apocalyptic number.

It is an amenable number.

16016661 is a deficient number, since it is larger than the sum of its proper divisors (7164939).

16016661 is a wasteful number, since it uses less digits than its factorization.

16016661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16016661 is about 4002.0820831162. The cubic root of 16016661 is about 252.0716444064.

The spelling of 16016661 in words is "sixteen million, sixteen thousand, six hundred sixty-one".