685266048 has 256 divisors, whose sum is σ = 2176761600. Its totient is φ = 211673088.

The previous prime is 685266031. The next prime is 685266053. The reversal of 685266048 is 840662586.

685266048 is a `hidden beast` number, since 68 + 526 + 60 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 685265994 and 685266012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2940940 + ... + 2941172.

It is an arithmetic number, because the mean of its divisors is an integer number (8502975).

Almost surely, 2^685266048 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 685266048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088380800).

685266048 is an abundant number, since it is smaller than the sum of its proper divisors (1491495552).

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

685266048 is a wasteful number, since it uses less digits than its factorization.

685266048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 685266048 is about 26177.5867489729. The cubic root of 685266048 is about 881.6300915395.

It can be divided in two parts, 6852 and 66048, that added together give a square (72900 = 270²).

The spelling of 685266048 in words is "six hundred eighty-five million, two hundred sixty-six thousand, forty-eight".