61840760 has 64 divisors (see below), whose sum is σ = 145800000. Its totient is φ = 23575552.

The previous prime is 61840739. The next prime is 61840817. The reversal of 61840760 is 6704816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102941 + ... + 103539.

It is an arithmetic number, because the mean of its divisors is an integer number (2278125).

Almost surely, 2^61840760 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 61840760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72900000).

61840760 is an abundant number, since it is smaller than the sum of its proper divisors (83959240).

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

61840760 is a wasteful number, since it uses less digits than its factorization.

61840760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 61840760 is about 7863.8896228266. The cubic root of 61840760 is about 395.4500238656.

The spelling of 61840760 in words is "sixty-one million, eight hundred forty thousand, seven hundred sixty".