61983560 has 32 divisors (see below), whose sum is σ = 139700160. Its totient is φ = 24751296.

The previous prime is 61983557. The next prime is 61983587. The reversal of 61983560 is 6538916.

61983560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 34607 + ... + 36353.

It is an arithmetic number, because the mean of its divisors is an integer number (4365630).

Almost surely, 2^61983560 is an apocalyptic number.

It is an amenable number.

61983560 is an abundant number, since it is smaller than the sum of its proper divisors (77716600).

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

61983560 is a wasteful number, since it uses less digits than its factorization.

61983560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2641 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 61983560 is about 7872.9638637555. The cubic root of 61983560 is about 395.7541752207.

The spelling of 61983560 in words is "sixty-one million, nine hundred eighty-three thousand, five hundred sixty".