61065149 has 2 divisors, whose sum is σ = 61065150. Its totient is φ = 61065148.

The previous prime is 61065143. The next prime is 61065167. The reversal of 61065149 is 94156016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53392249 + 7672900 = 7307^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 61065149 - 2⁸ = 61064893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61065143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30532574 + 30532575.

It is an arithmetic number, because the mean of its divisors is an integer number (30532575).

Almost surely, 2^61065149 is an apocalyptic number.

It is an amenable number.

61065149 is a deficient number, since it is larger than the sum of its proper divisors (1).

61065149 is an equidigital number, since it uses as much as digits as its factorization.

61065149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 61065149 is about 7814.4193002423. The cubic root of 61065149 is about 393.7898098995.

The spelling of 61065149 in words is "sixty-one million, sixty-five thousand, one hundred forty-nine".