65939912 has 16 divisors (see below), whose sum is σ = 123725340. Its totient is φ = 32946496.

The previous prime is 65939911. The next prime is 65939953. The reversal of 65939912 is 21993956.

It can be written as a sum of positive squares in 2 ways, for example, as 65383396 + 556516 = 8086^2 + 746^2 .

It is not an unprimeable number, because it can be changed into a prime (65939911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16898 + ... + 20430.

Almost surely, 2^65939912 is an apocalyptic number.

It is an amenable number.

65939912 is a deficient number, since it is larger than the sum of its proper divisors (57785428).

65939912 is a wasteful number, since it uses less digits than its factorization.

65939912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872 (or 5868 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 65939912 is about 8120.3394017738. The cubic root of 65939912 is about 404.0013233953.

The spelling of 65939912 in words is "sixty-five million, nine hundred thirty-nine thousand, nine hundred twelve".