285342563 has 6 divisors (see below), whose sum is σ = 313641132. Its totient is φ = 259402220.

The previous prime is 285342527. The next prime is 285342581. The reversal of 285342563 is 365243582.

It is a happy number.

It is not a de Polignac number, because 285342563 - 2⁸ = 285342307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285342523) 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, 1178981 + ... + 1179222.

It is an arithmetic number, because the mean of its divisors is an integer number (52273522).

Almost surely, 2^285342563 is an apocalyptic number.

285342563 is a deficient number, since it is larger than the sum of its proper divisors (28298569).

285342563 is a wasteful number, since it uses less digits than its factorization.

285342563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358225 (or 2358214 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 285342563 is about 16892.0858096329. The cubic root of 285342563 is about 658.3479980639.

The spelling of 285342563 in words is "two hundred eighty-five million, three hundred forty-two thousand, five hundred sixty-three".