61527840 has 192 divisors, whose sum is σ = 217147392. Its totient is φ = 14515200.

The previous prime is 61527803. The next prime is 61527847. The reversal of 61527840 is 4872516.

61527840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (61527847) 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 31 ways as a sum of consecutive naturals, for example, 226905 + ... + 227175.

It is an arithmetic number, because the mean of its divisors is an integer number (1130976).

Almost surely, 2^61527840 is an apocalyptic number.

61527840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61527840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108573696).

61527840 is an abundant number, since it is smaller than the sum of its proper divisors (155619552).

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

61527840 is a wasteful number, since it uses less digits than its factorization.

61527840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 61527840 is about 7843.9683834141. The cubic root of 61527840 is about 394.7818910177.

The spelling of 61527840 in words is "sixty-one million, five hundred twenty-seven thousand, eight hundred forty".