285307664 has 10 divisors (see below), whose sum is σ = 552783630. Its totient is φ = 142653824.

The previous prime is 285307637. The next prime is 285307679. The reversal of 285307664 is 466703582.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 279157264 + 6150400 = 16708^2 + 2480^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8915849 + ... + 8915880.

It is an arithmetic number, because the mean of its divisors is an integer number (55278363).

Almost surely, 2^285307664 is an apocalyptic number.

It is an amenable number.

285307664 is a deficient number, since it is larger than the sum of its proper divisors (267475966).

285307664 is a wasteful number, since it uses less digits than its factorization.

285307664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17831737 (or 17831731 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 285307664 is about 16891.0527795043. The cubic root of 285307664 is about 658.3211570822.

The spelling of 285307664 in words is "two hundred eighty-five million, three hundred seven thousand, six hundred sixty-four".