564986881 has 8 divisors (see below), whose sum is σ = 591418944. Its totient is φ = 538710480.

The previous prime is 564986867. The next prime is 564986897. The reversal of 564986881 is 188689465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 564986881 - 2¹⁹ = 564462593 is a prime.

It is a super-2 number, since 2×564986881² = 638420351404216322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564986801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31455 + ... + 46036.

It is an arithmetic number, because the mean of its divisors is an integer number (73927368).

Almost surely, 2^564986881 is an apocalyptic number.

It is an amenable number.

564986881 is a deficient number, since it is larger than the sum of its proper divisors (26432063).

564986881 is a wasteful number, since it uses less digits than its factorization.

564986881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77831.

The product of its digits is 3317760, while the sum is 55.

The square root of 564986881 is about 23769.4526861684. The cubic root of 564986881 is about 826.6965423610.

The spelling of 564986881 in words is "five hundred sixty-four million, nine hundred eighty-six thousand, eight hundred eighty-one".