65304991 has 2 divisors, whose sum is σ = 65304992. Its totient is φ = 65304990.

The previous prime is 65304983. The next prime is 65305039. The reversal of 65304991 is 19940356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65304991 - 2³ = 65304983 is a prime.

It is equal to p_3857482 and since 65304991 and 3857482 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65304991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65304901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32652495 + 32652496.

It is an arithmetic number, because the mean of its divisors is an integer number (32652496).

Almost surely, 2^65304991 is an apocalyptic number.

65304991 is a deficient number, since it is larger than the sum of its proper divisors (1).

65304991 is an equidigital number, since it uses as much as digits as its factorization.

65304991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 65304991 is about 8081.1503512804. The cubic root of 65304991 is about 402.7004590255.

The spelling of 65304991 in words is "sixty-five million, three hundred four thousand, nine hundred ninety-one".