65211077 has 2 divisors, whose sum is σ = 65211078. Its totient is φ = 65211076.

The previous prime is 65211023. The next prime is 65211079. The reversal of 65211077 is 77011256.

65211077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57365476 + 7845601 = 7574^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 65211077 - 2¹⁰ = 65210053 is a prime.

Together with 65211079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65211079) 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, 32605538 + 32605539.

It is an arithmetic number, because the mean of its divisors is an integer number (32605539).

Almost surely, 2^65211077 is an apocalyptic number.

It is an amenable number.

65211077 is a deficient number, since it is larger than the sum of its proper divisors (1).

65211077 is an equidigital number, since it uses as much as digits as its factorization.

65211077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 65211077 is about 8075.3375780830. The cubic root of 65211077 is about 402.5073275160.

The spelling of 65211077 in words is "sixty-five million, two hundred eleven thousand, seventy-seven".