61564576 has 12 divisors (see below), whose sum is σ = 121205322. Its totient is φ = 30782272.

The previous prime is 61564561. The next prime is 61564577. The reversal of 61564576 is 67546516.

61564576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 1904400 = 7724^2 + 1380^2 .

It is not an unprimeable number, because it can be changed into a prime (61564577) 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 as a sum of consecutive naturals, namely, 961915 + ... + 961978.

Almost surely, 2^61564576 is an apocalyptic number.

It is an amenable number.

61564576 is a deficient number, since it is larger than the sum of its proper divisors (59640746).

61564576 is a wasteful number, since it uses less digits than its factorization.

61564576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923903 (or 1923895 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 61564576 is about 7846.3097058426. The cubic root of 61564576 is about 394.8604452796.

The spelling of 61564576 in words is "sixty-one million, five hundred sixty-four thousand, five hundred seventy-six".