814643 has 2 divisors, whose sum is σ = 814644. Its totient is φ = 814642.

The previous prime is 814633. The next prime is 814687. The reversal of 814643 is 346418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814643 - 2⁶ = 814579 is a prime.

It is not a weakly prime, because it can be changed into another prime (814603) 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, 407321 + 407322.

It is an arithmetic number, because the mean of its divisors is an integer number (407322).

2⁸¹⁴⁶⁴³ is an apocalyptic number.

814643 is a deficient number, since it is larger than the sum of its proper divisors (1).

814643 is an equidigital number, since it uses as much as digits as its factorization.

814643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 814643 is about 902.5757585931. The cubic root of 814643 is about 93.3947455803.

The spelling of 814643 in words is "eight hundred fourteen thousand, six hundred forty-three".