568649780 has 12 divisors (see below), whose sum is σ = 1194164580. Its totient is φ = 227459904.

The previous prime is 568649743. The next prime is 568649797. The reversal of 568649780 is 87946865.

It can be written as a sum of positive squares in 2 ways, for example, as 389036176 + 179613604 = 19724^2 + 13402^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14216225 + ... + 14216264.

It is an arithmetic number, because the mean of its divisors is an integer number (99513715).

Almost surely, 2^568649780 is an apocalyptic number.

It is an amenable number.

568649780 is an abundant number, since it is smaller than the sum of its proper divisors (625514800).

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

568649780 is a wasteful number, since it uses less digits than its factorization.

568649780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28432498 (or 28432496 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 568649780 is about 23846.3787607259. The cubic root of 568649780 is about 828.4792300729.

The spelling of 568649780 in words is "five hundred sixty-eight million, six hundred forty-nine thousand, seven hundred eighty".