986561 has 8 divisors (see below), whose sum is σ = 1054944. Its totient is φ = 919360.

The previous prime is 986543. The next prime is 986563. The reversal of 986561 is 165689.

986561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 986561 - 2⁶ = 986497 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (131868).

2⁹⁸⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

986561 is a deficient number, since it is larger than the sum of its proper divisors (68383).

986561 is a wasteful number, since it uses less digits than its factorization.

986561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 12960, while the sum is 35.

The square root of 986561 is about 993.2577711752. The cubic root of 986561 is about 99.5500114739.

The spelling of 986561 in words is "nine hundred eighty-six thousand, five hundred sixty-one".