285424665 has 8 divisors (see below), whose sum is σ = 456679488. Its totient is φ = 152226480.

The previous prime is 285424661. The next prime is 285424681. The reversal of 285424665 is 566424582.

It is a happy number.

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

It is not a de Polignac number, because 285424665 - 2² = 285424661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285424661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9514141 + ... + 9514170.

It is an arithmetic number, because the mean of its divisors is an integer number (57084936).

Almost surely, 2^285424665 is an apocalyptic number.

It is an amenable number.

285424665 is a deficient number, since it is larger than the sum of its proper divisors (171254823).

285424665 is a wasteful number, since it uses less digits than its factorization.

285424665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19028319.

The product of its digits is 460800, while the sum is 42.

The square root of 285424665 is about 16894.5158261490. The cubic root of 285424665 is about 658.4111344609.

The spelling of 285424665 in words is "two hundred eighty-five million, four hundred twenty-four thousand, six hundred sixty-five".