891560 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 344640.

The previous prime is 891559. The next prime is 891563. The reversal of 891560 is 65198.

891560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891560.

It is not an unprimeable number, because it can be changed into a prime (891563) 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, 881 + ... + 1599.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁸⁹¹⁵⁶⁰ 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 891560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036800).

891560 is an abundant number, since it is smaller than the sum of its proper divisors (1182040).

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

891560 is a wasteful number, since it uses less digits than its factorization.

891560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 757 counting only the distinct ones).

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

The square root of 891560 is about 944.2245495644. The cubic root of 891560 is about 96.2461852651.

The spelling of 891560 in words is "eight hundred ninety-one thousand, five hundred sixty".