61107980 has 12 divisors (see below), whose sum is σ = 128326800. Its totient is φ = 24443184.

The previous prime is 61107973. The next prime is 61107983. The reversal of 61107980 is 8970116.

61107980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61107983) 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 3 ways as a sum of consecutive naturals, for example, 1527680 + ... + 1527719.

It is an arithmetic number, because the mean of its divisors is an integer number (10693900).

Almost surely, 2^61107980 is an apocalyptic number.

It is an amenable number.

61107980 is an abundant number, since it is smaller than the sum of its proper divisors (67218820).

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

61107980 is a wasteful number, since it uses less digits than its factorization.

61107980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055408 (or 3055406 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 61107980 is about 7817.1593306009. The cubic root of 61107980 is about 393.8818562347.

The spelling of 61107980 in words is "sixty-one million, one hundred seven thousand, nine hundred eighty".