686316065 has 8 divisors (see below), whose sum is σ = 823804800. Its totient is φ = 548902512.

The previous prime is 686316023. The next prime is 686316073. The reversal of 686316065 is 560613686.

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

It is a cyclic number.

It is not a de Polignac number, because 686316065 - 2¹⁶ = 686250529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3752 + ... + 37238.

It is an arithmetic number, because the mean of its divisors is an integer number (102975600).

Almost surely, 2^686316065 is an apocalyptic number.

It is an amenable number.

686316065 is a deficient number, since it is larger than the sum of its proper divisors (137488735).

686316065 is a wasteful number, since it uses less digits than its factorization.

686316065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37591.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 686316065 is about 26197.6347214782. The cubic root of 686316065 is about 882.0801620708.

The spelling of 686316065 in words is "six hundred eighty-six million, three hundred sixteen thousand, sixty-five".