285708673 has 4 divisors (see below), whose sum is σ = 286116948. Its totient is φ = 285300400.

The previous prime is 285708671. The next prime is 285708677. The reversal of 285708673 is 376807582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271359729 + 14348944 = 16473^2 + 3788^2 .

It is a cyclic number.

It is not a de Polignac number, because 285708673 - 2¹ = 285708671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285708671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203086 + ... + 204487.

It is an arithmetic number, because the mean of its divisors is an integer number (71529237).

Almost surely, 2^285708673 is an apocalyptic number.

It is an amenable number.

285708673 is a deficient number, since it is larger than the sum of its proper divisors (408275).

285708673 is an equidigital number, since it uses as much as digits as its factorization.

285708673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408274.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 285708673 is about 16902.9190674274. The cubic root of 285708673 is about 658.6294431365.

The spelling of 285708673 in words is "two hundred eighty-five million, seven hundred eight thousand, six hundred seventy-three".