685736020606 has 32 divisors (see below), whose sum is σ = 1292909829120. Its totient is φ = 265508261856.

The previous prime is 685736020601. The next prime is 685736020621. The reversal of 685736020606 is 606020637586.

It is a self number, because there is not a number n which added to its sum of digits gives 685736020606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685736020601) 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, 40074216 + ... + 40091323.

It is an arithmetic number, because the mean of its divisors is an integer number (40403432160).

Almost surely, 2^685736020606 is an apocalyptic number.

685736020606 is a deficient number, since it is larger than the sum of its proper divisors (607173808514).

685736020606 is a wasteful number, since it uses less digits than its factorization.

685736020606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80165608.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 685736020606 in words is "six hundred eighty-five billion, seven hundred thirty-six million, twenty thousand, six hundred six".