686122048 has 28 divisors (see below), whose sum is σ = 1362364560. Its totient is φ = 342849152.

The previous prime is 686122007. The next prime is 686122051. The reversal of 686122048 is 840221686.

It is a junction number, because it is equal to n+sod(n) for n = 686121998 and 686122016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178515 + ... + 182317.

Almost surely, 2^686122048 is an apocalyptic number.

It is an amenable number.

686122048 is a deficient number, since it is larger than the sum of its proper divisors (676242512).

686122048 is a wasteful number, since it uses less digits than its factorization.

686122048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6634 (or 6624 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 686122048 is about 26193.9315109435. The cubic root of 686122048 is about 881.9970348332.

The spelling of 686122048 in words is "six hundred eighty-six million, one hundred twenty-two thousand, forty-eight".