985649 has 8 divisors (see below), whose sum is σ = 1135680. Its totient is φ = 837936.

The previous prime is 985639. The next prime is 985657. The reversal of 985649 is 946589.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (985639) 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, 467 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (141960).

2⁹⁸⁵⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

985649 is a deficient number, since it is larger than the sum of its proper divisors (150031).

985649 is a wasteful number, since it uses less digits than its factorization.

985649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its digits is 77760, while the sum is 41.

The square root of 985649 is about 992.7985697008. The cubic root of 985649 is about 99.5193265658.

Subtracting from 985649 its reverse (946589), we obtain a triangular number (39060 = T₂₇₉).

It can be divided in two parts, 9 and 85649, that added together give a palindrome (85658).

The spelling of 985649 in words is "nine hundred eighty-five thousand, six hundred forty-nine".