814609 has 2 divisors, whose sum is σ = 814610. Its totient is φ = 814608.

The previous prime is 814603. The next prime is 814631. The reversal of 814609 is 906418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 10000 = 897^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 814609 - 2³ = 814601 is a prime.

It is not a weakly prime, because it can be changed into another prime (814601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407304 + 407305.

It is an arithmetic number, because the mean of its divisors is an integer number (407305).

2⁸¹⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

814609 is a deficient number, since it is larger than the sum of its proper divisors (1).

814609 is an equidigital number, since it uses as much as digits as its factorization.

814609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 814609 is about 902.5569234126. The cubic root of 814609 is about 93.3934462523.

Subtracting 814609 from its reverse (906418), we obtain a square (91809 = 303²).

The spelling of 814609 in words is "eight hundred fourteen thousand, six hundred nine".