65722141 has 2 divisors, whose sum is σ = 65722142. Its totient is φ = 65722140.

The previous prime is 65722133. The next prime is 65722169. The reversal of 65722141 is 14122756.

It is an a-pointer prime, because the next prime (65722169) can be obtained adding 65722141 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60062500 + 5659641 = 7750^2 + 2379^2 .

It is a cyclic number.

It is not a de Polignac number, because 65722141 - 2³ = 65722133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65720141) 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, 32861070 + 32861071.

It is an arithmetic number, because the mean of its divisors is an integer number (32861071).

Almost surely, 2^65722141 is an apocalyptic number.

It is an amenable number.

65722141 is a deficient number, since it is larger than the sum of its proper divisors (1).

65722141 is an equidigital number, since it uses as much as digits as its factorization.

65722141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 65722141 is about 8106.9193285736. The cubic root of 65722141 is about 403.5560857001.

Adding to 65722141 its reverse (14122756), we get a palindrome (79844897).

The spelling of 65722141 in words is "sixty-five million, seven hundred twenty-two thousand, one hundred forty-one".