880561 has 4 divisors (see below), whose sum is σ = 960624. Its totient is φ = 800500.

The previous prime is 880559. The next prime is 880571. The reversal of 880561 is 165088.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 880561 - 2¹ = 880559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (880531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40015 + ... + 40036.

It is an arithmetic number, because the mean of its divisors is an integer number (240156).

2⁸⁸⁰⁵⁶¹ is an apocalyptic number.

It is an amenable number.

880561 is a deficient number, since it is larger than the sum of its proper divisors (80063).

880561 is a wasteful number, since it uses less digits than its factorization.

880561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80062.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 880561 is about 938.3821183292. The cubic root of 880561 is about 95.8487563499.

It can be divided in two parts, 880 and 561, that added together give a palindrome (1441).

The spelling of 880561 in words is "eight hundred eighty thousand, five hundred sixty-one".