571086864 has 30 divisors (see below), whose sum is σ = 1598250446. Its totient is φ = 190362240.

The previous prime is 571086863. The next prime is 571086883. The reversal of 571086864 is 468680175.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 458302464 + 112784400 = 21408^2 + 10620^2 .

It is a super-2 number, since 2×571086864² = 652280412466708992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (571086863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1982797 + ... + 1983084.

Almost surely, 2^571086864 is an apocalyptic number.

It is an amenable number.

571086864 is an abundant number, since it is smaller than the sum of its proper divisors (1027163582).

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

571086864 is a wasteful number, since it uses less digits than its factorization.

571086864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965895 (or 3965886 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 571086864 is about 23897.4237942084. The cubic root of 571086864 is about 829.6610916148.

The spelling of 571086864 in words is "five hundred seventy-one million, eighty-six thousand, eight hundred sixty-four".