65115320 has 16 divisors (see below), whose sum is σ = 146509560. Its totient is φ = 26046112.

The previous prime is 65115289. The next prime is 65115329. The reversal of 65115320 is 2351156.

65115320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65115329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813902 + ... + 813981.

Almost surely, 2^65115320 is an apocalyptic number.

It is an amenable number.

65115320 is an abundant number, since it is smaller than the sum of its proper divisors (81394240).

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

65115320 is a wasteful number, since it uses less digits than its factorization.

65115320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627894 (or 1627890 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 65115320 is about 8069.4064217884. The cubic root of 65115320 is about 402.3102149138.

Adding to 65115320 its reverse (2351156), we get a palindrome (67466476).

The spelling of 65115320 in words is "sixty-five million, one hundred fifteen thousand, three hundred twenty".