685471248 has 200 divisors, whose sum is σ = 2473859520. Its totient is φ = 178018560.

The previous prime is 685471247. The next prime is 685471253. The reversal of 685471248 is 842174586.

685471248 is a `hidden beast` number, since 68 + 547 + 1 + 2 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (685471247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 96358 + ... + 103226.

Almost surely, 2^685471248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685471248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236929760).

685471248 is an abundant number, since it is smaller than the sum of its proper divisors (1788388272).

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

685471248 is a wasteful number, since it uses less digits than its factorization.

685471248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907 (or 6892 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 685471248 is about 26181.5058390460. The cubic root of 685471248 is about 881.7180828828.

The spelling of 685471248 in words is "six hundred eighty-five million, four hundred seventy-one thousand, two hundred forty-eight".