214256866 has 4 divisors (see below), whose sum is σ = 321385302. Its totient is φ = 107128432.

The previous prime is 214256851. The next prime is 214256897. The reversal of 214256866 is 668652412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136305625 + 77951241 = 11675^2 + 8829^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53564215 + ... + 53564218.

Almost surely, 2^214256866 is an apocalyptic number.

214256866 is a deficient number, since it is larger than the sum of its proper divisors (107128436).

214256866 is a wasteful number, since it uses less digits than its factorization.

214256866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107128435.

The product of its digits is 138240, while the sum is 40.

The square root of 214256866 is about 14637.5157045176. The cubic root of 214256866 is about 598.3816257364.

The spelling of 214256866 in words is "two hundred fourteen million, two hundred fifty-six thousand, eight hundred sixty-six".