65138682 has 32 divisors (see below), whose sum is σ = 149889024. Its totient is φ = 18486000.

The previous prime is 65138677. The next prime is 65138683. The reversal of 65138682 is 28683156.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65138682.

It is not an unprimeable number, because it can be changed into a prime (65138683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (4684032).

Almost surely, 2^65138682 is an apocalyptic number.

65138682 is an abundant number, since it is smaller than the sum of its proper divisors (84750342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65138682 is a wasteful number, since it uses less digits than its factorization.

65138682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434.

The product of its digits is 69120, while the sum is 39.

The square root of 65138682 is about 8070.8538581739. The cubic root of 65138682 is about 402.3583226271.

The spelling of 65138682 in words is "sixty-five million, one hundred thirty-eight thousand, six hundred eighty-two".