65680115 has 4 divisors (see below), whose sum is σ = 78816144. Its totient is φ = 52544088.

The previous prime is 65680079. The next prime is 65680117. The reversal of 65680115 is 51108656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65680115 - 2¹⁸ = 65417971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65680117) 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, 6568007 + ... + 6568016.

It is an arithmetic number, because the mean of its divisors is an integer number (19704036).

Almost surely, 2^65680115 is an apocalyptic number.

65680115 is a deficient number, since it is larger than the sum of its proper divisors (13136029).

65680115 is a wasteful number, since it uses less digits than its factorization.

65680115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13136028.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 65680115 is about 8104.3269307204. The cubic root of 65680115 is about 403.4700494264.

The spelling of 65680115 in words is "sixty-five million, six hundred eighty thousand, one hundred fifteen".