986634 has 48 divisors (see below), whose sum is σ = 2425920. Its totient is φ = 297000.

The previous prime is 986633. The next prime is 986641. The reversal of 986634 is 436689.

It is not an unprimeable number, because it can be changed into a prime (986633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6459 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (50540).

2⁹⁸⁶⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 986634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212960).

986634 is an abundant number, since it is smaller than the sum of its proper divisors (1439286).

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

986634 is a wasteful number, since it uses less digits than its factorization.

986634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 167 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 986634 is about 993.2945182573. The cubic root of 986634 is about 99.5524667948.

Subtracting from 986634 its reverse (436689), we obtain a palindrome (549945).

The spelling of 986634 in words is "nine hundred eighty-six thousand, six hundred thirty-four".