61065773 has 2 divisors, whose sum is σ = 61065774. Its totient is φ = 61065772.

The previous prime is 61065757. The next prime is 61065803. The reversal of 61065773 is 37756016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49519369 + 11546404 = 7037^2 + 3398^2 .

It is a cyclic number.

It is not a de Polignac number, because 61065773 - 2⁴ = 61065757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61005773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30532886 + 30532887.

It is an arithmetic number, because the mean of its divisors is an integer number (30532887).

Almost surely, 2^61065773 is an apocalyptic number.

It is an amenable number.

61065773 is a deficient number, since it is larger than the sum of its proper divisors (1).

61065773 is an equidigital number, since it uses as much as digits as its factorization.

61065773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 61065773 is about 7814.4592263317. The cubic root of 61065773 is about 393.7911512211.

The spelling of 61065773 in words is "sixty-one million, sixty-five thousand, seven hundred seventy-three".