65681116 has 6 divisors (see below), whose sum is σ = 114941960. Its totient is φ = 32840556.

The previous prime is 65681113. The next prime is 65681117. The reversal of 65681116 is 61118656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65681113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210136 + ... + 8210143.

Almost surely, 2^65681116 is an apocalyptic number.

It is an amenable number.

65681116 is a deficient number, since it is larger than the sum of its proper divisors (49260844).

65681116 is a wasteful number, since it uses less digits than its factorization.

65681116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16420283 (or 16420281 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 65681116 is about 8104.3886876186. The cubic root of 65681116 is about 403.4720991156.

The spelling of 65681116 in words is "sixty-five million, six hundred eighty-one thousand, one hundred sixteen".