16664059 has 2 divisors, whose sum is σ = 16664060. Its totient is φ = 16664058.

The previous prime is 16664057. The next prime is 16664107. The reversal of 16664059 is 95046661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16664059 - 2¹ = 16664057 is a prime.

Together with 16664057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another 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 as a sum of consecutive naturals, namely, 8332029 + 8332030.

It is an arithmetic number, because the mean of its divisors is an integer number (8332030).

Almost surely, 2^16664059 is an apocalyptic number.

16664059 is a deficient number, since it is larger than the sum of its proper divisors (1).

16664059 is an equidigital number, since it uses as much as digits as its factorization.

16664059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 16664059 is about 4082.1635195078. The cubic root of 16664059 is about 255.4231549059.

The spelling of 16664059 in words is "sixteen million, six hundred sixty-four thousand, fifty-nine".