65491849 has 2 divisors, whose sum is σ = 65491850. Its totient is φ = 65491848.

The previous prime is 65491847. The next prime is 65491859. The reversal of 65491849 is 94819456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63441225 + 2050624 = 7965^2 + 1432^2 .

It is a cyclic number.

It is not a de Polignac number, because 65491849 - 2¹ = 65491847 is a prime.

Together with 65491847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65491799 and 65491808.

It is not a weakly prime, because it can be changed into another prime (65491843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32745924 + 32745925.

It is an arithmetic number, because the mean of its divisors is an integer number (32745925).

Almost surely, 2^65491849 is an apocalyptic number.

It is an amenable number.

65491849 is a deficient number, since it is larger than the sum of its proper divisors (1).

65491849 is an equidigital number, since it uses as much as digits as its factorization.

65491849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 65491849 is about 8092.7034419902. The cubic root of 65491849 is about 403.0841772575.

The spelling of 65491849 in words is "sixty-five million, four hundred ninety-one thousand, eight hundred forty-nine".