564449986 has 16 divisors (see below), whose sum is σ = 891727200. Its totient is φ = 267223968.

The previous prime is 564449959. The next prime is 564449987. The reversal of 564449986 is 689944465.

It is not an unprimeable number, because it can be changed into a prime (564449987) 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, 100981 + ... + 106423.

It is an arithmetic number, because the mean of its divisors is an integer number (55732950).

Almost surely, 2^564449986 is an apocalyptic number.

564449986 is a deficient number, since it is larger than the sum of its proper divisors (327277214).

564449986 is a wasteful number, since it uses less digits than its factorization.

564449986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8193.

The product of its digits is 7464960, while the sum is 55.

The square root of 564449986 is about 23758.1561995034. The cubic root of 564449986 is about 826.4345953301.

It can be divided in two parts, 56444 and 9986, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 564449986 in words is "five hundred sixty-four million, four hundred forty-nine thousand, nine hundred eighty-six".