65349919 has 2 divisors, whose sum is σ = 65349920. Its totient is φ = 65349918.

The previous prime is 65349917. The next prime is 65349961. The reversal of 65349919 is 91994356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65349919 - 2¹ = 65349917 is a prime.

It is a super-2 number, since 2×65349919² = 8541223826613122, which contains 22 as substring.

Together with 65349917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65349913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32674959 + 32674960.

It is an arithmetic number, because the mean of its divisors is an integer number (32674960).

Almost surely, 2^65349919 is an apocalyptic number.

65349919 is a deficient number, since it is larger than the sum of its proper divisors (1).

65349919 is an equidigital number, since it uses as much as digits as its factorization.

65349919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 46.

The square root of 65349919 is about 8083.9296755971. The cubic root of 65349919 is about 402.7927867250.

The spelling of 65349919 in words is "sixty-five million, three hundred forty-nine thousand, nine hundred nineteen".