285022661 has 12 divisors (see below), whose sum is σ = 361699200. Its totient is φ = 222095160.

The previous prime is 285022637. The next prime is 285022669. The reversal of 285022661 is 166220582.

It is not a de Polignac number, because 285022661 - 2⁶ = 285022597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285022669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263861 + ... + 264938.

It is an arithmetic number, because the mean of its divisors is an integer number (30141600).

Almost surely, 2^285022661 is an apocalyptic number.

It is an amenable number.

285022661 is a deficient number, since it is larger than the sum of its proper divisors (76676539).

285022661 is a wasteful number, since it uses less digits than its factorization.

285022661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528824 (or 528817 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 285022661 is about 16882.6141636892. The cubic root of 285022661 is about 658.1018779934.

The spelling of 285022661 in words is "two hundred eighty-five million, twenty-two thousand, six hundred sixty-one".