685283645668 has 24 divisors (see below), whose sum is σ = 1251426939840. Its totient is φ = 327734029920.

The previous prime is 685283645663. The next prime is 685283645677. The reversal of 685283645668 is 866546382586.

685283645668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×685283645668² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 3384843 + ... + 3581581.

It is an arithmetic number, because the mean of its divisors is an integer number (52142789160).

Almost surely, 2^685283645668 is an apocalyptic number.

It is an amenable number.

685283645668 is a deficient number, since it is larger than the sum of its proper divisors (566143294172).

685283645668 is a wasteful number, since it uses less digits than its factorization.

685283645668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234627 (or 234625 counting only the distinct ones).

The product of its digits is 398131200, while the sum is 67.

The spelling of 685283645668 in words is "six hundred eighty-five billion, two hundred eighty-three million, six hundred forty-five thousand, six hundred sixty-eight".