686812730630 has 16 divisors (see below), whose sum is σ = 1331360062704. Its totient is φ = 253592392800.

The previous prime is 686812730627. The next prime is 686812730647. The reversal of 686812730630 is 36037218686.

It is a congruent number.

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, 2641587296 + ... + 2641587555.

It is an arithmetic number, because the mean of its divisors is an integer number (83210003919).

Almost surely, 2^686812730630 is an apocalyptic number.

686812730630 is a deficient number, since it is larger than the sum of its proper divisors (644547332074).

686812730630 is a wasteful number, since it uses less digits than its factorization.

686812730630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5283174871.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 686812730630 in words is "six hundred eighty-six billion, eight hundred twelve million, seven hundred thirty thousand, six hundred thirty".