285339664 has 45 divisors (see below), whose sum is σ = 572213469. Its totient is φ = 137838720.

The previous prime is 285339661. The next prime is 285339697. The reversal of 285339664 is 466933582.

It is a happy number.

The square root of 285339664 is 16892.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 271590400 = 3708^2 + 16480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285339661) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2770237 + ... + 2770339.

Almost surely, 2^285339664 is an apocalyptic number.

285339664 is the 16892-nd square number.

It is an amenable number.

285339664 is an abundant number, since it is smaller than the sum of its proper divisors (286873805).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285339664 is an equidigital number, since it uses as much as digits as its factorization.

285339664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 146 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The cubic root of 285339664 is about 658.3457685130.

The spelling of 285339664 in words is "two hundred eighty-five million, three hundred thirty-nine thousand, six hundred sixty-four".