686045576 has 32 divisors (see below), whose sum is σ = 1333287000. Its totient is φ = 330548736.

The previous prime is 686045501. The next prime is 686045599. The reversal of 686045576 is 675540686.

It can be written as a sum of positive squares in 4 ways, for example, as 476548900 + 209496676 = 21830^2 + 14474^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 686045576.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129410 + ... + 134606.

Almost surely, 2^686045576 is an apocalyptic number.

It is an amenable number.

686045576 is a deficient number, since it is larger than the sum of its proper divisors (647241424).

686045576 is a wasteful number, since it uses less digits than its factorization.

686045576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801 (or 5797 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The square root of 686045576 is about 26192.4717428501. The cubic root of 686045576 is about 881.9642658414.

The spelling of 686045576 in words is "six hundred eighty-six million, forty-five thousand, five hundred seventy-six".