685283645669 has 16 divisors (see below), whose sum is σ = 786299227392. Its totient is φ = 585049817088.

The previous prime is 685283645663. The next prime is 685283645677. The reversal of 685283645669 is 966546382586.

It is a cyclic number.

It is not a de Polignac number, because 685283645669 - 2¹² = 685283641573 is a prime.

It is a super-3 number, since 3×685283645669³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 685283645599 and 685283645608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685283645663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3563237 + ... + 3750629.

It is an arithmetic number, because the mean of its divisors is an integer number (49143701712).

Almost surely, 2^685283645669 is an apocalyptic number.

It is an amenable number.

685283645669 is a deficient number, since it is larger than the sum of its proper divisors (101015581723).

685283645669 is a wasteful number, since it uses less digits than its factorization.

685283645669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189476.

The product of its digits is 447897600, while the sum is 68.

The spelling of 685283645669 in words is "six hundred eighty-five billion, two hundred eighty-three million, six hundred forty-five thousand, six hundred sixty-nine".