65309738 has 16 divisors (see below), whose sum is σ = 105912576. Its totient is φ = 30025200.

The previous prime is 65309737. The next prime is 65309753. The reversal of 65309738 is 83790356.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65309695 and 65309704.

It is not an unprimeable number, because it can be changed into a prime (65309737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2063 + ... + 11613.

It is an arithmetic number, because the mean of its divisors is an integer number (6619536).

Almost surely, 2^65309738 is an apocalyptic number.

65309738 is a deficient number, since it is larger than the sum of its proper divisors (40602838).

65309738 is a wasteful number, since it uses less digits than its factorization.

65309738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 65309738 is about 8081.4440541280. Note that the first 3 decimals coincide. The cubic root of 65309738 is about 402.7102161805.

The spelling of 65309738 in words is "sixty-five million, three hundred nine thousand, seven hundred thirty-eight".