61489782 has 48 divisors (see below), whose sum is σ = 144904032. Its totient is φ = 18766080.

The previous prime is 61489781. The next prime is 61489793. The reversal of 61489782 is 28798416.

61489782 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 not an unprimeable number, because it can be changed into a prime (61489781) 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 23 ways as a sum of consecutive naturals, for example, 8607 + ... + 14037.

It is an arithmetic number, because the mean of its divisors is an integer number (3018834).

Almost surely, 2^61489782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61489782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72452016).

61489782 is an abundant number, since it is smaller than the sum of its proper divisors (83414250).

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

61489782 is a wasteful number, since it uses less digits than its factorization.

61489782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5493 (or 5490 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 61489782 is about 7841.5420677313. The cubic root of 61489782 is about 394.7004768801.

The spelling of 61489782 in words is "sixty-one million, four hundred eighty-nine thousand, seven hundred eighty-two".