986564 has 6 divisors (see below), whose sum is σ = 1726494. Its totient is φ = 493280.

The previous prime is 986563. The next prime is 986567. The reversal of 986564 is 465689.

986564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 2500 = 992^2 + 50^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 986564.

It is not an unprimeable number, because it can be changed into a prime (986563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123317 + ... + 123324.

It is an arithmetic number, because the mean of its divisors is an integer number (287749).

2⁹⁸⁶⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

986564 is a deficient number, since it is larger than the sum of its proper divisors (739930).

986564 is a wasteful number, since it uses less digits than its factorization.

986564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246645 (or 246643 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 986564 is about 993.2592813561. The cubic root of 986564 is about 99.5501123799.

The spelling of 986564 in words is "nine hundred eighty-six thousand, five hundred sixty-four".