65538634 has 16 divisors (see below), whose sum is σ = 114473088. Its totient is φ = 27557712.

The previous prime is 65538611. The next prime is 65538647. The reversal of 65538634 is 43683556.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43422 + ... + 44905.

It is an arithmetic number, because the mean of its divisors is an integer number (7154568).

Almost surely, 2^65538634 is an apocalyptic number.

65538634 is a deficient number, since it is larger than the sum of its proper divisors (48934454).

65538634 is a wasteful number, since it uses less digits than its factorization.

65538634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88389.

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

The square root of 65538634 is about 8095.5934927589. The cubic root of 65538634 is about 403.1801373133.

The spelling of 65538634 in words is "sixty-five million, five hundred thirty-eight thousand, six hundred thirty-four".