61108580 has 48 divisors (see below), whose sum is σ = 140501424. Its totient is φ = 22187520.

The previous prime is 61108577. The next prime is 61108589. The reversal of 61108580 is 8580116.

It can be written as a sum of positive squares in 8 ways, for example, as 3013696 + 58094884 = 1736^2 + 7622^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (61108589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13934 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (2927113).

Almost surely, 2^61108580 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 61108580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70250712).

61108580 is an abundant number, since it is smaller than the sum of its proper divisors (79392844).

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

61108580 is a wasteful number, since it uses less digits than its factorization.

61108580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 61108580 is about 7817.1977076188. The cubic root of 61108580 is about 393.8831453644.

Adding to 61108580 its reverse (8580116), we get a palindrome (69688696).

The spelling of 61108580 in words is "sixty-one million, one hundred eight thousand, five hundred eighty".