285015663 has 6 divisors (see below), whose sum is σ = 411689304. Its totient is φ = 190010436.

The previous prime is 285015629. The next prime is 285015667. The reversal of 285015663 is 366510582.

It is not a de Polignac number, because 285015663 - 2¹² = 285011567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285015667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15834195 + ... + 15834212.

It is an arithmetic number, because the mean of its divisors is an integer number (68614884).

Almost surely, 2^285015663 is an apocalyptic number.

285015663 is a deficient number, since it is larger than the sum of its proper divisors (126673641).

285015663 is a wasteful number, since it uses less digits than its factorization.

285015663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31668413 (or 31668410 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 285015663 is about 16882.4069077842. The cubic root of 285015663 is about 658.0964919484.

The spelling of 285015663 in words is "two hundred eighty-five million, fifteen thousand, six hundred sixty-three".