61444773 has 24 divisors (see below), whose sum is σ = 97919640. Its totient is φ = 36887040.

The previous prime is 61444771. The next prime is 61444777. The reversal of 61444773 is 37744416.

It is a happy number.

61444773 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 4 ways, for example, as 1954404 + 59490369 = 1398^2 + 7713^2 .

It is not a de Polignac number, because 61444773 - 2¹ = 61444771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61444771) 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 23 ways as a sum of consecutive naturals, for example, 1608 + ... + 11201.

It is an arithmetic number, because the mean of its divisors is an integer number (4079985).

Almost surely, 2^61444773 is an apocalyptic number.

It is an amenable number.

61444773 is a deficient number, since it is larger than the sum of its proper divisors (36474867).

61444773 is a wasteful number, since it uses less digits than its factorization.

61444773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12869 (or 12866 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 61444773 is about 7838.6716349137. The cubic root of 61444773 is about 394.6041497101.

The spelling of 61444773 in words is "sixty-one million, four hundred forty-four thousand, seven hundred seventy-three".