16668379 has 24 divisors (see below), whose sum is σ = 21143808. Its totient is φ = 13023360.

The previous prime is 16668361. The next prime is 16668401. The reversal of 16668379 is 97386661.

It is not a de Polignac number, because 16668379 - 2⁹ = 16667867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16668319) 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 23 ways as a sum of consecutive naturals, for example, 87174 + ... + 87364.

It is an arithmetic number, because the mean of its divisors is an integer number (880992).

Almost surely, 2^16668379 is an apocalyptic number.

16668379 is a deficient number, since it is larger than the sum of its proper divisors (4475429).

16668379 is a wasteful number, since it uses less digits than its factorization.

16668379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 348 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 16668379 is about 4082.6926163991. The cubic root of 16668379 is about 255.4452250128.

The spelling of 16668379 in words is "sixteen million, six hundred sixty-eight thousand, three hundred seventy-nine".