686805795 has 24 divisors (see below), whose sum is σ = 1282038576. Its totient is φ = 338119488.

The previous prime is 686805793. The next prime is 686805809. The reversal of 686805795 is 597508686.

686805795 is a `hidden beast` number, since 6 + 8 + 68 + 0 + 579 + 5 = 666.

It is not a de Polignac number, because 686805795 - 2¹ = 686805793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686805793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586429 + ... + 587598.

It is an arithmetic number, because the mean of its divisors is an integer number (53418274).

Almost surely, 2^686805795 is an apocalyptic number.

686805795 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

686805795 is a deficient number, since it is larger than the sum of its proper divisors (595232781).

686805795 is a wasteful number, since it uses less digits than its factorization.

686805795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174051 (or 1174048 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The square root of 686805795 is about 26206.9798908611. The cubic root of 686805795 is about 882.2899188830.

The spelling of 686805795 in words is "six hundred eighty-six million, eight hundred five thousand, seven hundred ninety-five".