61739384 has 64 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 25363584.

The previous prime is 61739371. The next prime is 61739387. The reversal of 61739384 is 48393716.

61739384 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 (61739387) 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 15 ways as a sum of consecutive naturals, for example, 171797 + ... + 172155.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^61739384 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 61739384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

61739384 is an abundant number, since it is smaller than the sum of its proper divisors (76155016).

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

61739384 is a wasteful number, since it uses less digits than its factorization.

61739384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 488 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 61739384 is about 7857.4413138120. The cubic root of 61739384 is about 395.2338176626.

The spelling of 61739384 in words is "sixty-one million, seven hundred thirty-nine thousand, three hundred eighty-four".