685764088682 has 8 divisors (see below), whose sum is σ = 1028649718596. Its totient is φ = 342880849152.

The previous prime is 685764088679. The next prime is 685764088699. The reversal of 685764088682 is 286880467586.

It can be written as a sum of positive squares in 2 ways, for example, as 681118439401 + 4645649281 = 825299^2 + 68159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598088 + ... + 1315004.

Almost surely, 2^685764088682 is an apocalyptic number.

685764088682 is a deficient number, since it is larger than the sum of its proper divisors (342885629914).

685764088682 is a wasteful number, since it uses less digits than its factorization.

685764088682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195192.

The product of its (nonzero) digits is 247726080, while the sum is 68.

The spelling of 685764088682 in words is "six hundred eighty-five billion, seven hundred sixty-four million, eighty-eight thousand, six hundred eighty-two".