16664392 has 32 divisors (see below), whose sum is σ = 32266080. Its totient is φ = 8064000.

The previous prime is 16664377. The next prime is 16664399. The reversal of 16664392 is 29346661.

16664392 = T₁₂₃ + T₁₂₄ + ... + T₄₆₆.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16664399) 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 7 ways as a sum of consecutive naturals, for example, 66267 + ... + 66517.

It is an arithmetic number, because the mean of its divisors is an integer number (1008315).

Almost surely, 2^16664392 is an apocalyptic number.

It is an amenable number.

16664392 is a deficient number, since it is larger than the sum of its proper divisors (15601688).

16664392 is a wasteful number, since it uses less digits than its factorization.

16664392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 489 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 16664392 is about 4082.2043064991. The cubic root of 16664392 is about 255.4248562790.

The spelling of 16664392 in words is "sixteen million, six hundred sixty-four thousand, three hundred ninety-two".