685016016786 has 24 divisors (see below), whose sum is σ = 1484318156880. Its totient is φ = 228320705016.

The previous prime is 685016016781. The next prime is 685016016793. The reversal of 685016016786 is 687610610586.

685016016786 is a `hidden beast` number, since 6 + 8 + 501 + 60 + 1 + 6 + 78 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (685016016781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1261156 + ... + 1720623.

It is an arithmetic number, because the mean of its divisors is an integer number (61846589870).

Almost surely, 2^685016016786 is an apocalyptic number.

685016016786 is an abundant number, since it is smaller than the sum of its proper divisors (799302140094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685016016786 is a wasteful number, since it uses less digits than its factorization.

685016016786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994550 (or 2994547 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 685016016786 in words is "six hundred eighty-five billion, sixteen million, sixteen thousand, seven hundred eighty-six".