61610120 has 64 divisors (see below), whose sum is σ = 162872640. Its totient is φ = 20678400.

The previous prime is 61610111. The next prime is 61610147. The reversal of 61610120 is 2101616.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (2544885).

Almost surely, 2^61610120 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 61610120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81436320).

61610120 is an abundant number, since it is smaller than the sum of its proper divisors (101262520).

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

61610120 is a wasteful number, since it uses less digits than its factorization.

61610120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806 (or 10802 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 61610120 is about 7849.2114253599. The cubic root of 61610120 is about 394.9577907148.

Adding to 61610120 its reverse (2101616), we get a palindrome (63711736).

The spelling of 61610120 in words is "sixty-one million, six hundred ten thousand, one hundred twenty".