65233919 has 2 divisors, whose sum is σ = 65233920. Its totient is φ = 65233918.

The previous prime is 65233907. The next prime is 65233921. The reversal of 65233919 is 91933256.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65233919 is a prime.

It is a super-2 number, since 2×65233919² = 8510928376197122, which contains 22 as substring.

Together with 65233921, 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 (65233969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32616959 + 32616960.

It is an arithmetic number, because the mean of its divisors is an integer number (32616960).

Almost surely, 2^65233919 is an apocalyptic number.

65233919 is a deficient number, since it is larger than the sum of its proper divisors (1).

65233919 is an equidigital number, since it uses as much as digits as its factorization.

65233919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 65233919 is about 8076.7517604542. The cubic root of 65233919 is about 402.5543185054.

The spelling of 65233919 in words is "sixty-five million, two hundred thirty-three thousand, nine hundred nineteen".