65680814 has 8 divisors (see below), whose sum is σ = 99240768. Its totient is φ = 32600560.

The previous prime is 65680799. The next prime is 65680817. The reversal of 65680814 is 41808656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65680817) 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, 119582 + ... + 120129.

It is an arithmetic number, because the mean of its divisors is an integer number (12405096).

Almost surely, 2^65680814 is an apocalyptic number.

65680814 is a deficient number, since it is larger than the sum of its proper divisors (33559954).

65680814 is a wasteful number, since it uses less digits than its factorization.

65680814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239850.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 65680814 is about 8104.3700557169. The cubic root of 65680814 is about 403.4714807300.

The spelling of 65680814 in words is "sixty-five million, six hundred eighty thousand, eight hundred fourteen".