685416516 has 24 divisors (see below), whose sum is σ = 1638313824. Its totient is φ = 222899520.

The previous prime is 685416503. The next prime is 685416521. The reversal of 685416516 is 615614586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696070 + ... + 697053.

It is an arithmetic number, because the mean of its divisors is an integer number (68263076).

Almost surely, 2^685416516 is an apocalyptic number.

It is an amenable number.

685416516 is an abundant number, since it is smaller than the sum of its proper divisors (952897308).

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

685416516 is a wasteful number, since it uses less digits than its factorization.

685416516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393171 (or 1393169 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 685416516 is about 26180.4605765445. The cubic root of 685416516 is about 881.6946150964.

It can be divided in two parts, 68541 and 6516, that added together give a palindrome (75057).

The spelling of 685416516 in words is "six hundred eighty-five million, four hundred sixteen thousand, five hundred sixteen".