285599997 has 12 divisors (see below), whose sum is σ = 412679904. Its totient is φ = 190332360.

The previous prime is 285599989. The next prime is 285599999. The reversal of 285599997 is 799995582.

It is not a de Polignac number, because 285599997 - 2³ = 285599989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285599999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45958 + ... + 51800.

It is an arithmetic number, because the mean of its divisors is an integer number (34389992).

Almost surely, 2^285599997 is an apocalyptic number.

It is an amenable number.

285599997 is a deficient number, since it is larger than the sum of its proper divisors (127079907).

285599997 is a wasteful number, since it uses less digits than its factorization.

285599997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11280 (or 11277 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 63.

The square root of 285599997 is about 16899.7040506631. The cubic root of 285599997 is about 658.5459241567.

The spelling of 285599997 in words is "two hundred eighty-five million, five hundred ninety-nine thousand, nine hundred ninety-seven".