805633 has 2 divisors, whose sum is σ = 805634. Its totient is φ = 805632.

The previous prime is 805589. The next prime is 805639. The reversal of 805633 is 336508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 1024 = 897^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 805633 - 2⁹ = 805121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805598 and 805607.

It is not a weakly prime, because it can be changed into another prime (805639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402816 + 402817.

It is an arithmetic number, because the mean of its divisors is an integer number (402817).

2⁸⁰⁵⁶³³ is an apocalyptic number.

It is an amenable number.

805633 is a deficient number, since it is larger than the sum of its proper divisors (1).

805633 is an equidigital number, since it uses as much as digits as its factorization.

805633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 805633 is about 897.5706100358. The cubic root of 805633 is about 93.0491511875.

The spelling of 805633 in words is "eight hundred five thousand, six hundred thirty-three".