61660448 has 24 divisors (see below), whose sum is σ = 122935680. Its totient is φ = 30438720.

The previous prime is 61660441. The next prime is 61660471. The reversal of 61660448 is 84406616.

61660448 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 (61660441) 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, 9668 + ... + 14723.

It is an arithmetic number, because the mean of its divisors is an integer number (5122320).

Almost surely, 2^61660448 is an apocalyptic number.

It is an amenable number.

61660448 is a deficient number, since it is larger than the sum of its proper divisors (61275232).

61660448 is a wasteful number, since it uses less digits than its factorization.

61660448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24480 (or 24472 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 61660448 is about 7852.4166980618. The cubic root of 61660448 is about 395.0653056581.

The spelling of 61660448 in words is "sixty-one million, six hundred sixty thousand, four hundred forty-eight".