61760736 has 72 divisors (see below), whose sum is σ = 177080904. Its totient is φ = 20417280.

The previous prime is 61760729. The next prime is 61760737. The reversal of 61760736 is 63706716.

61760736 is a `hidden beast` number, since 6 + 17 + 607 + 36 = 666.

61760736 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 (72).

It is a super-2 number, since 2×61760736² = 7628777022523392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61760736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61760737) 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 11 ways as a sum of consecutive naturals, for example, 36910 + ... + 38546.

It is an arithmetic number, because the mean of its divisors is an integer number (2459457).

Almost surely, 2^61760736 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 61760736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88540452).

61760736 is an abundant number, since it is smaller than the sum of its proper divisors (115320168).

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

61760736 is a wasteful number, since it uses less digits than its factorization.

61760736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 61760736 is about 7858.7999083830. The cubic root of 61760736 is about 395.2793750754.

The spelling of 61760736 in words is "sixty-one million, seven hundred sixty thousand, seven hundred thirty-six".