214212666 has 48 divisors (see below), whose sum is σ = 448422912. Its totient is φ = 68209920.

The previous prime is 214212643. The next prime is 214212667. The reversal of 214212666 is 666212412.

It is not an unprimeable number, because it can be changed into a prime (214212667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 559111 + ... + 559493.

It is an arithmetic number, because the mean of its divisors is an integer number (9342144).

Almost surely, 2^214212666 is an apocalyptic number.

214212666 is an abundant number, since it is smaller than the sum of its proper divisors (234210246).

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

214212666 is a wasteful number, since it uses less digits than its factorization.

214212666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 516 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 214212666 is about 14636.0058075966. The cubic root of 214212666 is about 598.3404753059.

The spelling of 214212666 in words is "two hundred fourteen million, two hundred twelve thousand, six hundred sixty-six".