61886320 has 20 divisors (see below), whose sum is σ = 143885880. Its totient is φ = 24754496.

The previous prime is 61886317. The next prime is 61886327. The reversal of 61886320 is 2368816.

61886320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×61886320³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61886327) 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, 386710 + ... + 386869.

It is an arithmetic number, because the mean of its divisors is an integer number (7194294).

Almost surely, 2^61886320 is an apocalyptic number.

It is an amenable number.

61886320 is an abundant number, since it is smaller than the sum of its proper divisors (81999560).

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

61886320 is a wasteful number, since it uses less digits than its factorization.

61886320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773592 (or 773586 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 61886320 is about 7866.7858748030. The cubic root of 61886320 is about 395.5471134465.

The spelling of 61886320 in words is "sixty-one million, eight hundred eighty-six thousand, three hundred twenty".