685307718 has 24 divisors (see below), whose sum is σ = 1489529808. Its totient is φ = 227713392.

The previous prime is 685307717. The next prime is 685307741. The reversal of 685307718 is 817703586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685307717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54346 + ... + 65757.

It is an arithmetic number, because the mean of its divisors is an integer number (62063742).

Almost surely, 2^685307718 is an apocalyptic number.

685307718 is an abundant number, since it is smaller than the sum of its proper divisors (804222090).

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

685307718 is a wasteful number, since it uses less digits than its factorization.

685307718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120428 (or 120425 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 685307718 is about 26178.3826467565. The cubic root of 685307718 is about 881.6479613783.

The spelling of 685307718 in words is "six hundred eighty-five million, three hundred seven thousand, seven hundred eighteen".