805487 has 2 divisors, whose sum is σ = 805488. Its totient is φ = 805486.

The previous prime is 805471. The next prime is 805499. The reversal of 805487 is 784508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805487 - 2⁴ = 805471 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805487.

It is not a weakly prime, because it can be changed into another prime (805187) 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, 402743 + 402744.

It is an arithmetic number, because the mean of its divisors is an integer number (402744).

2⁸⁰⁵⁴⁸⁷ is an apocalyptic number.

805487 is a deficient number, since it is larger than the sum of its proper divisors (1).

805487 is an equidigital number, since it uses as much as digits as its factorization.

805487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 805487 is about 897.4892757019. The cubic root of 805487 is about 93.0435299361.

The spelling of 805487 in words is "eight hundred five thousand, four hundred eighty-seven".