214639 has 2 divisors, whose sum is σ = 214640. Its totient is φ = 214638.

The previous prime is 214631. The next prime is 214651. The reversal of 214639 is 936412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214639 - 2³ = 214631 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214631) 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, 107319 + 107320.

It is an arithmetic number, because the mean of its divisors is an integer number (107320).

2²¹⁴⁶³⁹ is an apocalyptic number.

214639 is a deficient number, since it is larger than the sum of its proper divisors (1).

214639 is an equidigital number, since it uses as much as digits as its factorization.

214639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 214639 is about 463.2914849207. The cubic root of 214639 is about 59.8737158733.

It can be divided in two parts, 2 and 14639, that added together give a palindrome (14641).

The spelling of 214639 in words is "two hundred fourteen thousand, six hundred thirty-nine".