686605115 has 16 divisors (see below), whose sum is σ = 967081152. Its totient is φ = 458089344.

The previous prime is 686605103. The next prime is 686605169. The reversal of 686605115 is 511506686.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686605115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263804 + ... + 266393.

It is an arithmetic number, because the mean of its divisors is an integer number (60442572).

Almost surely, 2^686605115 is an apocalyptic number.

686605115 is a deficient number, since it is larger than the sum of its proper divisors (280476037).

686605115 is a wasteful number, since it uses less digits than its factorization.

686605115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530246.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 686605115 is about 26203.1508601542. The cubic root of 686605115 is about 882.2039774665.

The spelling of 686605115 in words is "six hundred eighty-six million, six hundred five thousand, one hundred fifteen".