16664055 has 16 divisors (see below), whose sum is σ = 27039744. Its totient is φ = 8761760.

The previous prime is 16664027. The next prime is 16664057. The reversal of 16664055 is 55046661.

It is not a de Polignac number, because 16664055 - 2¹¹ = 16662007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664057) 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, 6759 + ... + 8888.

It is an arithmetic number, because the mean of its divisors is an integer number (1689984).

Almost surely, 2^16664055 is an apocalyptic number.

16664055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16664055 is a deficient number, since it is larger than the sum of its proper divisors (10375689).

16664055 is a wasteful number, since it uses less digits than its factorization.

16664055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15726.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 16664055 is about 4082.1630295715. The cubic root of 16664055 is about 255.4231344689.

The spelling of 16664055 in words is "sixteen million, six hundred sixty-four thousand, fifty-five".