61446561 has 8 divisors (see below), whose sum is σ = 89376864. Its totient is φ = 37240320.

The previous prime is 61446559. The next prime is 61446587. The reversal of 61446561 is 16564416.

It is a happy number.

61446561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61446561 - 2¹ = 61446559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1862017 = 61446561 / (6 + 1 + 4 + 4 + 6 + 5 + 6 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61446521) 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 7 ways as a sum of consecutive naturals, for example, 930976 + ... + 931041.

It is an arithmetic number, because the mean of its divisors is an integer number (11172108).

Almost surely, 2^61446561 is an apocalyptic number.

It is an amenable number.

61446561 is a deficient number, since it is larger than the sum of its proper divisors (27930303).

61446561 is a wasteful number, since it uses less digits than its factorization.

61446561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862031.

The product of its digits is 17280, while the sum is 33.

The square root of 61446561 is about 7838.7856840202. The cubic root of 61446561 is about 394.6079772414.

The spelling of 61446561 in words is "sixty-one million, four hundred forty-six thousand, five hundred sixty-one".