16664061 has 16 divisors (see below), whose sum is σ = 22630400. Its totient is φ = 10905840.

The previous prime is 16664059. The next prime is 16664107. The reversal of 16664061 is 16046661.

It is not a de Polignac number, because 16664061 - 2¹ = 16664059 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 (16664161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61356 + ... + 61626.

It is an arithmetic number, because the mean of its divisors is an integer number (1414400).

Almost surely, 2^16664061 is an apocalyptic number.

It is an amenable number.

16664061 is a deficient number, since it is larger than the sum of its proper divisors (5966339).

16664061 is a wasteful number, since it uses less digits than its factorization.

16664061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 16664061 is about 4082.1637644759. The cubic root of 16664061 is about 255.4231651244.

The spelling of 16664061 in words is "sixteen million, six hundred sixty-four thousand, sixty-one".