214987 has 2 divisors, whose sum is σ = 214988. Its totient is φ = 214986.

The previous prime is 214967. The next prime is 214993. The reversal of 214987 is 789412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214987 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (214967) 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 as a sum of consecutive naturals, namely, 107493 + 107494.

It is an arithmetic number, because the mean of its divisors is an integer number (107494).

2²¹⁴⁹⁸⁷ is an apocalyptic number.

214987 is a deficient number, since it is larger than the sum of its proper divisors (1).

214987 is an equidigital number, since it uses as much as digits as its factorization.

214987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 214987 is about 463.6669063024. Note that the first 3 decimals coincide. The cubic root of 214987 is about 59.9060566914.

The spelling of 214987 in words is "two hundred fourteen thousand, nine hundred eighty-seven".