961580 has 12 divisors (see below), whose sum is σ = 2019360. Its totient is φ = 384624.

The previous prime is 961567. The next prime is 961601. The reversal of 961580 is 85169.

961580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

961580 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24020 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (168280).

2⁹⁶¹⁵⁸⁰ is an apocalyptic number.

It is an amenable number.

961580 is an abundant number, since it is smaller than the sum of its proper divisors (1057780).

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

961580 is a wasteful number, since it uses less digits than its factorization.

961580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48088 (or 48086 counting only the distinct ones).

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

The square root of 961580 is about 980.6018560048. The cubic root of 961580 is about 98.7025729635.

The spelling of 961580 in words is "nine hundred sixty-one thousand, five hundred eighty".