285587897 has 8 divisors (see below), whose sum is σ = 333976896. Its totient is φ = 239096592.

The previous prime is 285587893. The next prime is 285587921. The reversal of 285587897 is 798785582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 285587897 - 2² = 285587893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285587893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474098 + ... + 474699.

It is an arithmetic number, because the mean of its divisors is an integer number (41747112).

Almost surely, 2^285587897 is an apocalyptic number.

It is an amenable number.

285587897 is a deficient number, since it is larger than the sum of its proper divisors (48388999).

285587897 is an equidigital number, since it uses as much as digits as its factorization.

285587897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948847.

The product of its digits is 11289600, while the sum is 59.

The square root of 285587897 is about 16899.3460524365. The cubic root of 285587897 is about 658.5366238319.

The spelling of 285587897 in words is "two hundred eighty-five million, five hundred eighty-seven thousand, eight hundred ninety-seven".