685418872 has 16 divisors (see below), whose sum is σ = 1286049240. Its totient is φ = 342472416.

The previous prime is 685418831. The next prime is 685418879. The reversal of 685418872 is 278814586.

685418872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685418879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17023 + ... + 40750.

Almost surely, 2^685418872 is an apocalyptic number.

It is an amenable number.

685418872 is a deficient number, since it is larger than the sum of its proper divisors (600630368).

685418872 is a wasteful number, since it uses less digits than its factorization.

685418872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59262 (or 59258 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The square root of 685418872 is about 26180.5055718945. The cubic root of 685418872 is about 881.6956253191.

The spelling of 685418872 in words is "six hundred eighty-five million, four hundred eighteen thousand, eight hundred seventy-two".