285351666 has 16 divisors (see below), whose sum is σ = 576038304. Its totient is φ = 94228064.

The previous prime is 285351643. The next prime is 285351701. The reversal of 285351666 is 666153582.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221595 + ... + 222878.

It is an arithmetic number, because the mean of its divisors is an integer number (36002394).

Almost surely, 2^285351666 is an apocalyptic number.

285351666 is an abundant number, since it is smaller than the sum of its proper divisors (290686638).

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

285351666 is a wasteful number, since it uses less digits than its factorization.

285351666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444585.

The product of its digits is 259200, while the sum is 42.

The square root of 285351666 is about 16892.3552531907. The cubic root of 285351666 is about 658.3549988633.

It can be divided in two parts, 2853516 and 66, that added together give a palindrome (2853582).

The spelling of 285351666 in words is "two hundred eighty-five million, three hundred fifty-one thousand, six hundred sixty-six".