61980716 has 24 divisors (see below), whose sum is σ = 126846720. Its totient is φ = 25944912.

The previous prime is 61980701. The next prime is 61980773. The reversal of 61980716 is 61708916.

It is a self number, because there is not a number n which added to its sum of digits gives 61980716.

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 7 ways as a sum of consecutive naturals, for example, 24536 + ... + 26943.

It is an arithmetic number, because the mean of its divisors is an integer number (5285280).

Almost surely, 2^61980716 is an apocalyptic number.

It is an amenable number.

61980716 is an abundant number, since it is smaller than the sum of its proper divisors (64866004).

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

61980716 is a wasteful number, since it uses less digits than its factorization.

61980716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51533 (or 51531 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 61980716 is about 7872.7832435550. The cubic root of 61980716 is about 395.7481223141.

The spelling of 61980716 in words is "sixty-one million, nine hundred eighty thousand, seven hundred sixteen".