65221063 has 2 divisors, whose sum is σ = 65221064. Its totient is φ = 65221062.

The previous prime is 65221049. The next prime is 65221073. The reversal of 65221063 is 36012256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65221063 - 2²¹ = 63123911 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65221043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32610531 + 32610532.

It is an arithmetic number, because the mean of its divisors is an integer number (32610532).

Almost surely, 2^65221063 is an apocalyptic number.

65221063 is a deficient number, since it is larger than the sum of its proper divisors (1).

65221063 is an equidigital number, since it uses as much as digits as its factorization.

65221063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 65221063 is about 8075.9558567392. The cubic root of 65221063 is about 402.5278722517.

The spelling of 65221063 in words is "sixty-five million, two hundred twenty-one thousand, sixty-three".