214691 has 2 divisors, whose sum is σ = 214692. Its totient is φ = 214690.

The previous prime is 214673. The next prime is 214723. The reversal of 214691 is 196412.

It is a happy number.

214691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214691 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 214691.

It is not a weakly prime, because it can be changed into another prime (214631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107345 + 107346.

It is an arithmetic number, because the mean of its divisors is an integer number (107346).

2²¹⁴⁶⁹¹ is an apocalyptic number.

214691 is a deficient number, since it is larger than the sum of its proper divisors (1).

214691 is an equidigital number, since it uses as much as digits as its factorization.

214691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 214691 is about 463.3476016988. The cubic root of 214691 is about 59.8785506297.

The spelling of 214691 in words is "two hundred fourteen thousand, six hundred ninety-one".