65691768 has 16 divisors (see below), whose sum is σ = 164229480. Its totient is φ = 21897248.

The previous prime is 65691763. The next prime is 65691809. The reversal of 65691768 is 86719656.

65691768 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 (65691763) 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, 1368555 + ... + 1368602.

Almost surely, 2^65691768 is an apocalyptic number.

It is an amenable number.

65691768 is an abundant number, since it is smaller than the sum of its proper divisors (98537712).

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

65691768 is a wasteful number, since it uses less digits than its factorization.

65691768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737166 (or 2737162 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 65691768 is about 8105.0458357742. The cubic root of 65691768 is about 403.4939093037.

The spelling of 65691768 in words is "sixty-five million, six hundred ninety-one thousand, seven hundred sixty-eight".