61718868 has 24 divisors (see below), whose sum is σ = 160012160. Its totient is φ = 20572920.

The previous prime is 61718863. The next prime is 61718893. The reversal of 61718868 is 86881716.

61718868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61718863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285628 + ... + 285843.

Almost surely, 2^61718868 is an apocalyptic number.

It is an amenable number.

61718868 is an abundant number, since it is smaller than the sum of its proper divisors (98293292).

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

61718868 is a wasteful number, since it uses less digits than its factorization.

61718868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571484 (or 571476 counting only the distinct ones).

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

The square root of 61718868 is about 7856.1356912925. The cubic root of 61718868 is about 395.1900340742.

The spelling of 61718868 in words is "sixty-one million, seven hundred eighteen thousand, eight hundred sixty-eight".