685496528 has 20 divisors (see below), whose sum is σ = 1349924388. Its totient is φ = 337128960.

The previous prime is 685496503. The next prime is 685496561. The reversal of 685496528 is 825694586.

685496528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 329495104 + 356001424 = 18152^2 + 18868^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 685496528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350201 + ... + 352152.

Almost surely, 2^685496528 is an apocalyptic number.

It is an amenable number.

685496528 is a deficient number, since it is larger than the sum of its proper divisors (664427860).

685496528 is a wasteful number, since it uses less digits than its factorization.

685496528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702422 (or 702416 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The square root of 685496528 is about 26181.9886181321. The cubic root of 685496528 is about 881.7289219268.

The spelling of 685496528 in words is "six hundred eighty-five million, four hundred ninety-six thousand, five hundred twenty-eight".