61088860 has 48 divisors (see below), whose sum is σ = 149397696. Its totient is φ = 20547072.

The previous prime is 61088827. The next prime is 61088891. The reversal of 61088860 is 6888016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3304 + ... + 11536.

It is an arithmetic number, because the mean of its divisors is an integer number (3112452).

Almost surely, 2^61088860 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 61088860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74698848).

61088860 is an abundant number, since it is smaller than the sum of its proper divisors (88308836).

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

61088860 is a wasteful number, since it uses less digits than its factorization.

61088860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302 (or 8300 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 61088860 is about 7815.9362842848. The cubic root of 61088860 is about 393.8407715478.

The spelling of 61088860 in words is "sixty-one million, eighty-eight thousand, eight hundred sixty".