686715010 has 16 divisors (see below), whose sum is σ = 1239761016. Its totient is φ = 273869568.

The previous prime is 686714999. The next prime is 686715019. The reversal of 686715010 is 10517686.

It can be written as a sum of positive squares in 4 ways, for example, as 413837649 + 272877361 = 20343^2 + 16519^2 .

It is not an unprimeable number, because it can be changed into a prime (686715019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98517 + ... + 105256.

Almost surely, 2^686715010 is an apocalyptic number.

686715010 is a deficient number, since it is larger than the sum of its proper divisors (553046006).

686715010 is a wasteful number, since it uses less digits than its factorization.

686715010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204117.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 686715010 is about 26205.2477568902. The cubic root of 686715010 is about 882.2510421873.

The spelling of 686715010 in words is "six hundred eighty-six million, seven hundred fifteen thousand, ten".