16666086 has 16 divisors (see below), whose sum is σ = 35293104. Its totient is φ = 5228544.

The previous prime is 16666081. The next prime is 16666093. The reversal of 16666086 is 68066661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666081) 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, 81595 + ... + 81798.

It is an arithmetic number, because the mean of its divisors is an integer number (2205819).

Almost surely, 2^16666086 is an apocalyptic number.

16666086 is an abundant number, since it is smaller than the sum of its proper divisors (18627018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16666086 is a wasteful number, since it uses less digits than its factorization.

16666086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163415.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 16666086 is about 4082.4117871670. The cubic root of 16666086 is about 255.4335109611.

The spelling of 16666086 in words is "sixteen million, six hundred sixty-six thousand, eighty-six".