61911912 has 32 divisors (see below), whose sum is σ = 156232800. Its totient is φ = 20443584.

The previous prime is 61911907. The next prime is 61911917. The reversal of 61911912 is 21911916.

61911912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61911907) and next prime (61911917).

It is a self number, because there is not a number n which added to its sum of digits gives 61911912.

It is not an unprimeable number, because it can be changed into a prime (61911917) 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, 9487 + ... + 14622.

It is an arithmetic number, because the mean of its divisors is an integer number (4882275).

Almost surely, 2^61911912 is an apocalyptic number.

It is an amenable number.

61911912 is an abundant number, since it is smaller than the sum of its proper divisors (94320888).

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

61911912 is a wasteful number, since it uses less digits than its factorization.

61911912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24225 (or 24221 counting only the distinct ones).

The product of its digits is 972, while the sum is 30.

The square root of 61911912 is about 7868.4122921972. The cubic root of 61911912 is about 395.6016297848.

The spelling of 61911912 in words is "sixty-one million, nine hundred eleven thousand, nine hundred twelve".