981560 has 32 divisors (see below), whose sum is σ = 2255040. Its totient is φ = 384384.

The previous prime is 981527. The next prime is 981569. The reversal of 981560 is 65189.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981560.

It is not an unprimeable number, because it can be changed into a prime (981569) 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, 1889 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (70470).

2⁹⁸¹⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1127520).

981560 is an abundant number, since it is smaller than the sum of its proper divisors (1273480).

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

981560 is a wasteful number, since it uses less digits than its factorization.

981560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 981560 is about 990.7370993356. The cubic root of 981560 is about 99.3815159948.

The spelling of 981560 in words is "nine hundred eighty-one thousand, five hundred sixty".