16666212 has 24 divisors (see below), whose sum is σ = 39275712. Its totient is φ = 5500000.

The previous prime is 16666207. The next prime is 16666217. The reversal of 16666212 is 21266661.

It is an interprime number because it is at equal distance from previous prime (16666207) and next prime (16666217).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 16666212.

It is not an unprimeable number, because it can be changed into a prime (16666217) 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, 5664 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (1636488).

Almost surely, 2^16666212 is an apocalyptic number.

16666212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16666212 is an abundant number, since it is smaller than the sum of its proper divisors (22609500).

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

16666212 is a wasteful number, since it uses less digits than its factorization.

16666212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13859 (or 13857 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 16666212 is about 4082.4272191920. The cubic root of 16666212 is about 255.4341546744.

The spelling of 16666212 in words is "sixteen million, six hundred sixty-six thousand, two hundred twelve".