61444693 has 2 divisors, whose sum is σ = 61444694. Its totient is φ = 61444692.

The previous prime is 61444687. The next prime is 61444703. The reversal of 61444693 is 39644416.

61444693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 88804 = 7833^2 + 298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61444693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61444673) 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, 30722346 + 30722347.

It is an arithmetic number, because the mean of its divisors is an integer number (30722347).

Almost surely, 2^61444693 is an apocalyptic number.

It is an amenable number.

61444693 is a deficient number, since it is larger than the sum of its proper divisors (1).

61444693 is an equidigital number, since it uses as much as digits as its factorization.

61444693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 61444693 is about 7838.6665320066. Note that the first 3 decimals coincide. The cubic root of 61444693 is about 394.6039784542.

The spelling of 61444693 in words is "sixty-one million, four hundred forty-four thousand, six hundred ninety-three".