65220319 has 2 divisors, whose sum is σ = 65220320. Its totient is φ = 65220318.

The previous prime is 65220289. The next prime is 65220377. The reversal of 65220319 is 91302256.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65220319 is a prime.

It is a super-2 number, since 2×65220319² = 8507380020923522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65220919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32610159 + 32610160.

It is an arithmetic number, because the mean of its divisors is an integer number (32610160).

Almost surely, 2^65220319 is an apocalyptic number.

65220319 is a deficient number, since it is larger than the sum of its proper divisors (1).

65220319 is an equidigital number, since it uses as much as digits as its factorization.

65220319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 65220319 is about 8075.9097939489. The cubic root of 65220319 is about 402.5263416527.

The spelling of 65220319 in words is "sixty-five million, two hundred twenty thousand, three hundred nineteen".