61788168 has 96 divisors (see below), whose sum is σ = 181621440. Its totient is φ = 18864000.

The previous prime is 61788131. The next prime is 61788169. The reversal of 61788168 is 86188716.

It is not an unprimeable number, because it can be changed into a prime (61788169) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 234805 + ... + 235067.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^61788168 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 61788168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90810720).

61788168 is an abundant number, since it is smaller than the sum of its proper divisors (119833272).

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

61788168 is a wasteful number, since it uses less digits than its factorization.

61788168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 532 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 61788168 is about 7860.5450192719. The cubic root of 61788168 is about 395.3378895919.

The spelling of 61788168 in words is "sixty-one million, seven hundred eighty-eight thousand, one hundred sixty-eight".