65895649 has 4 divisors (see below), whose sum is σ = 66025620. Its totient is φ = 65765680.

The previous prime is 65895619. The next prime is 65895653. The reversal of 65895649 is 94659856.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29811600 + 36084049 = 5460^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 65895649 - 2¹³ = 65887457 is a prime.

It is a super-3 number, since 3×65895649³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65895596 and 65895605.

It is not an unprimeable number, because it can be changed into a prime (65895619) 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 in 3 ways as a sum of consecutive naturals, for example, 64222 + ... + 65239.

It is an arithmetic number, because the mean of its divisors is an integer number (16506405).

Almost surely, 2^65895649 is an apocalyptic number.

It is an amenable number.

65895649 is a deficient number, since it is larger than the sum of its proper divisors (129971).

65895649 is a wasteful number, since it uses less digits than its factorization.

65895649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129970.

The product of its digits is 2332800, while the sum is 52.

The square root of 65895649 is about 8117.6135039801. The cubic root of 65895649 is about 403.9109061616.

The spelling of 65895649 in words is "sixty-five million, eight hundred ninety-five thousand, six hundred forty-nine".