214945666 has 16 divisors (see below), whose sum is σ = 350469504. Its totient is φ = 98277264.

The previous prime is 214945663. The next prime is 214945667. The reversal of 214945666 is 666549412.

It is not an unprimeable number, because it can be changed into a prime (214945663) 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, 35850 + ... + 41413.

It is an arithmetic number, because the mean of its divisors is an integer number (21904344).

Almost surely, 2^214945666 is an apocalyptic number.

214945666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

214945666 is a deficient number, since it is larger than the sum of its proper divisors (135523838).

214945666 is a wasteful number, since it uses less digits than its factorization.

214945666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77385.

The product of its digits is 311040, while the sum is 43.

The square root of 214945666 is about 14661.0254075218. The cubic root of 214945666 is about 599.0221721015.

The spelling of 214945666 in words is "two hundred fourteen million, nine hundred forty-five thousand, six hundred sixty-six".