16666067 has 8 divisors (see below), whose sum is σ = 18213552. Its totient is φ = 15124000.

The previous prime is 16666061. The next prime is 16666081. The reversal of 16666067 is 76066661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16666067 - 2¹⁰ = 16665043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16666067.

It is not an unprimeable number, because it can be changed into a prime (16666061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7817 + ... + 9717.

It is an arithmetic number, because the mean of its divisors is an integer number (2276694).

Almost surely, 2^16666067 is an apocalyptic number.

16666067 is a deficient number, since it is larger than the sum of its proper divisors (1547485).

16666067 is a wasteful number, since it uses less digits than its factorization.

16666067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 16666067 is about 4082.4094601105. The cubic root of 16666067 is about 255.4334138930.

The spelling of 16666067 in words is "sixteen million, six hundred sixty-six thousand, sixty-seven".