685366048 has 96 divisors (see below), whose sum is σ = 1445592960. Its totient is φ = 319334400.

The previous prime is 685366027. The next prime is 685366051. The reversal of 685366048 is 840663586.

It is a super-2 number, since 2×685366048² = 939453239502276608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685365989 and 685366007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4538773 + ... + 4538923.

It is an arithmetic number, because the mean of its divisors is an integer number (15058260).

Almost surely, 2^685366048 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 685366048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722796480).

685366048 is an abundant number, since it is smaller than the sum of its proper divisors (760226912).

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

685366048 is a wasteful number, since it uses less digits than its factorization.

685366048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 685366048 is about 26179.4967102120. The cubic root of 685366048 is about 881.6729745051.

The spelling of 685366048 in words is "six hundred eighty-five million, three hundred sixty-six thousand, forty-eight".