685285525582586 has 8 divisors (see below), whose sum is σ = 1037024998890804. Its totient is φ = 339610525952320.

The previous prime is 685285525582583. The next prime is 685285525582733.

It is a happy number.

685285525582586 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 442733401995361 + 242552123587225 = 21041231^2 + 15574085^2 .

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

It is a super-2 number, since 2×685285525582586² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 685285525582586.

It is not an unprimeable number, because it can be changed into a prime (685285525582583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516118419205 + ... + 1516118419656.

Almost surely, 2^{685285525582586} is an apocalyptic number.

685285525582586 is a deficient number, since it is larger than the sum of its proper divisors (351739473308218).

685285525582586 is a wasteful number, since it uses less digits than its factorization.

685285525582586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032236838976.

The product of its digits is 18432000000, while the sum is 80.

The spelling of 685285525582586 in words is "six hundred eighty-five trillion, two hundred eighty-five billion, five hundred twenty-five million, five hundred eighty-two thousand, five hundred eighty-six".