65727149 has 2 divisors, whose sum is σ = 65727150. Its totient is φ = 65727148.

The previous prime is 65727107. The next prime is 65727157. The reversal of 65727149 is 94172756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38217124 + 27510025 = 6182^2 + 5245^2 .

It is a cyclic number.

It is not a de Polignac number, because 65727149 - 2²⁴ = 48949933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65727749) 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, 32863574 + 32863575.

It is an arithmetic number, because the mean of its divisors is an integer number (32863575).

Almost surely, 2^65727149 is an apocalyptic number.

It is an amenable number.

65727149 is a deficient number, since it is larger than the sum of its proper divisors (1).

65727149 is an equidigital number, since it uses as much as digits as its factorization.

65727149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 65727149 is about 8107.2281946421. The cubic root of 65727149 is about 403.5663357088.

The spelling of 65727149 in words is "sixty-five million, seven hundred twenty-seven thousand, one hundred forty-nine".