285340673 has 2 divisors, whose sum is σ = 285340674. Its totient is φ = 285340672.

The previous prime is 285340669. The next prime is 285340681. The reversal of 285340673 is 376043582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156450064 + 128890609 = 12508^2 + 11353^2 .

It is a cyclic number.

It is not a de Polignac number, because 285340673 - 2² = 285340669 is a prime.

It is not a weakly prime, because it can be changed into another prime (285340603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142670336 + 142670337.

It is an arithmetic number, because the mean of its divisors is an integer number (142670337).

Almost surely, 2^285340673 is an apocalyptic number.

It is an amenable number.

285340673 is a deficient number, since it is larger than the sum of its proper divisors (1).

285340673 is an equidigital number, since it uses as much as digits as its factorization.

285340673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 285340673 is about 16892.0298661825. The cubic root of 285340673 is about 658.3465445122.

The spelling of 285340673 in words is "two hundred eighty-five million, three hundred forty thousand, six hundred seventy-three".