61061568 has 56 divisors (see below), whose sum is σ = 166786560. Its totient is φ = 19695360.

The previous prime is 61061551. The next prime is 61061579. The reversal of 61061568 is 86516016.

61061568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 823 + ... + 11081.

Almost surely, 2^61061568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61061568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83393280).

61061568 is an abundant number, since it is smaller than the sum of its proper divisors (105724992).

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

61061568 is a wasteful number, since it uses less digits than its factorization.

61061568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 61061568 is about 7814.1901691730. The cubic root of 61061568 is about 393.7821121706.

The spelling of 61061568 in words is "sixty-one million, sixty-one thousand, five hundred sixty-eight".