65410991 has 2 divisors, whose sum is σ = 65410992. Its totient is φ = 65410990.

The previous prime is 65410987. The next prime is 65411039. The reversal of 65410991 is 19901456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65410991 - 2² = 65410987 is a prime.

It is a Sophie Germain prime.

It is equal to p_3863339 and since 65410991 and 3863339 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65410591) 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, 32705495 + 32705496.

It is an arithmetic number, because the mean of its divisors is an integer number (32705496).

Almost surely, 2^65410991 is an apocalyptic number.

65410991 is a deficient number, since it is larger than the sum of its proper divisors (1).

65410991 is an equidigital number, since it uses as much as digits as its factorization.

65410991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 65410991 is about 8087.7061642965. The cubic root of 65410991 is about 402.9182227490.

The spelling of 65410991 in words is "sixty-five million, four hundred ten thousand, nine hundred ninety-one".