65634385 has 16 divisors (see below), whose sum is σ = 80697600. Its totient is φ = 51232896.

The previous prime is 65634367. The next prime is 65634389. The reversal of 65634385 is 58343656.

It is a cyclic number.

It is not a de Polignac number, because 65634385 - 2¹¹ = 65632337 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (65634389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34222 + ... + 36088.

It is an arithmetic number, because the mean of its divisors is an integer number (5043600).

Almost surely, 2^65634385 is an apocalyptic number.

It is an amenable number.

65634385 is a deficient number, since it is larger than the sum of its proper divisors (15063215).

65634385 is a wasteful number, since it uses less digits than its factorization.

65634385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its digits is 259200, while the sum is 40.

The square root of 65634385 is about 8101.5051070773. The cubic root of 65634385 is about 403.3763885615.

The spelling of 65634385 in words is "sixty-five million, six hundred thirty-four thousand, three hundred eighty-five".