686710872530 has 16 divisors (see below), whose sum is σ = 1275953105664. Its totient is φ = 265823563440.

The previous prime is 686710872527. The next prime is 686710872539. The reversal of 686710872530 is 35278017686.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (686710872539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107597872 + ... + 1107598491.

It is an arithmetic number, because the mean of its divisors is an integer number (79747069104).

Almost surely, 2^686710872530 is an apocalyptic number.

686710872530 is a deficient number, since it is larger than the sum of its proper divisors (589242233134).

686710872530 is a wasteful number, since it uses less digits than its factorization.

686710872530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215196401.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 686710872530 in words is "six hundred eighty-six billion, seven hundred ten million, eight hundred seventy-two thousand, five hundred thirty".