568261998 has 12 divisors (see below), whose sum is σ = 1231234368. Its totient is φ = 189420660.

The previous prime is 568261979. The next prime is 568262027. The reversal of 568261998 is 899162865.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15785038 + ... + 15785073.

It is an arithmetic number, because the mean of its divisors is an integer number (102602864).

Almost surely, 2^568261998 is an apocalyptic number.

568261998 is an abundant number, since it is smaller than the sum of its proper divisors (662972370).

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

568261998 is a wasteful number, since it uses less digits than its factorization.

568261998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31570119 (or 31570116 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 568261998 is about 23838.2465378643. The cubic root of 568261998 is about 828.2908643453.

The spelling of 568261998 in words is "five hundred sixty-eight million, two hundred sixty-one thousand, nine hundred ninety-eight".